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9980997 = 313255923
BaseRepresentation
bin100110000100…
…110001000101
3200210002100120
4212010301011
510023342442
6553532153
7150560055
oct46046105
920702316
109980997
1156a7964
123414059
1320b6020
14147b565
15d224ec
hex984c45

9980997 has 8 divisors (see below), whose sum is σ = 14331744. Its totient is φ = 6142128.

The previous prime is 9980987. The next prime is 9981001. The reversal of 9980997 is 7990899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9980997 - 27 = 9980869 is a prime.

It is a super-2 number, since 2×99809972 = 199240602228018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9980987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127923 + ... + 128000.

It is an arithmetic number, because the mean of its divisors is an integer number (1791468).

Almost surely, 29980997 is an apocalyptic number.

It is an amenable number.

9980997 is a deficient number, since it is larger than the sum of its proper divisors (4350747).

9980997 is a wasteful number, since it uses less digits than its factorization.

9980997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255939.

The product of its (nonzero) digits is 367416, while the sum is 51.

The square root of 9980997 is about 3159.2715932632. The cubic root of 9980997 is about 215.3069133930.

The spelling of 9980997 in words is "nine million, nine hundred eighty thousand, nine hundred ninety-seven".

Divisors: 1 3 13 39 255923 767769 3326999 9980997