39951696 has 20 divisors (see below), whose sum is σ = 103208672. Its totient is φ = 13317216.

The previous prime is 39951689. The next prime is 39951701. The reversal of 39951696 is 69615993.

It is a super-2 number, since 2×39951696² = 3192276026552832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 832327 = 39951696 / (3 + 9 + 9 + 5 + 1 + 6 + 9 + 6).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416116 + ... + 416211.

Almost surely, 2^39951696 is an apocalyptic number.

It is an amenable number.

39951696 is an abundant number, since it is smaller than the sum of its proper divisors (63256976).

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

39951696 is a wasteful number, since it uses less digits than its factorization.

39951696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832338 (or 832332 counting only the distinct ones).

The product of its digits is 393660, while the sum is 48.

The square root of 39951696 is about 6320.7354002521. The cubic root of 39951696 is about 341.8574694200.

The spelling of 39951696 in words is "thirty-nine million, nine hundred fifty-one thousand, six hundred ninety-six".