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9999392 = 25132432
BaseRepresentation
bin100110001001…
…010000100000
3200211000120212
4212021100200
510024440032
6554153252
7150664514
oct46112040
920730525
109999392
11570a767
123422828
1320c1500
141484144
15d27bb2
hex989420

9999392 has 54 divisors (see below), whose sum is σ = 21824397. Its totient is φ = 4507776.

The previous prime is 9999347. The next prime is 9999397. The reversal of 9999392 is 2939999.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 8549776 + 1449616 = 2924^2 + 1204^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=2236.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9999392.

It is not an unprimeable number, because it can be changed into a prime (9999397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 232523 + ... + 232565.

Almost surely, 29999392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9999392

9999392 is an abundant number, since it is smaller than the sum of its proper divisors (11825005).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9999392 is a wasteful number, since it uses less digits than its factorization.

9999392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 58 counting only the distinct ones).

The product of its digits is 354294, while the sum is 50.

The square root of 9999392 is about 3162.1815254662. The cubic root of 9999392 is about 215.4391025937.

The spelling of 9999392 in words is "nine million, nine hundred ninety-nine thousand, three hundred ninety-two".

Divisors: 1 2 4 8 13 16 26 32 43 52 86 104 169 172 208 338 344 416 559 676 688 1118 1352 1376 1849 2236 2704 3698 4472 5408 7267 7396 8944 14534 14792 17888 24037 29068 29584 48074 58136 59168 96148 116272 192296 232544 312481 384592 624962 769184 1249924 2499848 4999696 9999392