39891368 has 16 divisors (see below), whose sum is σ = 81596160. Its totient is φ = 18132400.

The previous prime is 39891359. The next prime is 39891413. The reversal of 39891368 is 86319893.

It is a super-2 number, since 2×39891368² = 3182642481822848, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226568 + ... + 226743.

It is an arithmetic number, because the mean of its divisors is an integer number (5099760).

Almost surely, 2^39891368 is an apocalyptic number.

It is an amenable number.

39891368 is an abundant number, since it is smaller than the sum of its proper divisors (41704792).

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

39891368 is a wasteful number, since it uses less digits than its factorization.

39891368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453328 (or 453324 counting only the distinct ones).

The product of its digits is 279936, while the sum is 47.

The square root of 39891368 is about 6315.9613678363. The cubic root of 39891368 is about 341.6853117989.

The spelling of 39891368 in words is "thirty-nine million, eight hundred ninety-one thousand, three hundred sixty-eight".