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9993947 = 833472
BaseRepresentation
bin100110000111…
…111011011011
3200210202010012
4212013323123
510024301242
6554112135
7150642605
oct46077333
920722105
109993947
115706667
12341b64b
1320bbba2
141482175
15d26282
hex987edb

9993947 has 6 divisors (see below), whose sum is σ = 10143588. Its totient is φ = 9845084.

The previous prime is 9993941. The next prime is 9993967. The reversal of 9993947 is 7493999.

It is a de Polignac number, because none of the positive numbers 2k-9993947 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9993895 and 9993904.

It is not an unprimeable number, because it can be changed into a prime (9993941) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28628 + ... + 28974.

It is an arithmetic number, because the mean of its divisors is an integer number (1690598).

Almost surely, 29993947 is an apocalyptic number.

9993947 is a deficient number, since it is larger than the sum of its proper divisors (149641).

9993947 is an frugal number, since it uses more digits than its factorization.

9993947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777 (or 430 counting only the distinct ones).

The product of its digits is 551124, while the sum is 50.

The square root of 9993947 is about 3161.3204519631. The cubic root of 9993947 is about 215.3999909190.

The spelling of 9993947 in words is "nine million, nine hundred ninety-three thousand, nine hundred forty-seven".

Divisors: 1 83 347 28801 120409 9993947