9956807974 has 16 divisors (see below), whose sum is σ = 15948616320. Its totient is φ = 4651678080.

The previous prime is 9956807951. The next prime is 9956807981. The reversal of 9956807974 is 4797086599.

It is a super-2 number, since 2×9956807974² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2767059 + ... + 2770654.

It is an arithmetic number, because the mean of its divisors is an integer number (996788520).

Almost surely, 2^9956807974 is an apocalyptic number.

9956807974 is a deficient number, since it is larger than the sum of its proper divisors (5991808346).

9956807974 is a wasteful number, since it uses less digits than its factorization.

9956807974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5537775.

The product of its (nonzero) digits is 34292160, while the sum is 64.

The square root of 9956807974 is about 99783.8061711418. The cubic root of 9956807974 is about 2151.3284001934.

The spelling of 9956807974 in words is "nine billion, nine hundred fifty-six million, eight hundred seven thousand, nine hundred seventy-four".