39988904 has 32 divisors (see below), whose sum is σ = 79367040. Its totient is φ = 18849600.

The previous prime is 39988903. The next prime is 39988909. The reversal of 39988904 is 40988993.

It is a super-2 number, since 2×39988904² = 3198224886242432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (39988903) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 11534 + ... + 14594.

It is an arithmetic number, because the mean of its divisors is an integer number (2480220).

Almost surely, 2^39988904 is an apocalyptic number.

It is an amenable number.

39988904 is a deficient number, since it is larger than the sum of its proper divisors (39378136).

39988904 is a wasteful number, since it uses less digits than its factorization.

39988904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161 (or 3157 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 39988904 is about 6323.6780436705. The cubic root of 39988904 is about 341.9635632556.

The spelling of 39988904 in words is "thirty-nine million, nine hundred eighty-eight thousand, nine hundred four".