39988164 has 24 divisors (see below), whose sum is σ = 95292288. Its totient is φ = 13045600.

The previous prime is 39988139. The next prime is 39988181. The reversal of 39988164 is 46188993.

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 7 ways as a sum of consecutive naturals, for example, 34887 + ... + 36014.

It is an arithmetic number, because the mean of its divisors is an integer number (3970512).

Almost surely, 2^39988164 is an apocalyptic number.

It is an amenable number.

39988164 is an abundant number, since it is smaller than the sum of its proper divisors (55304124).

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

39988164 is a wasteful number, since it uses less digits than its factorization.

39988164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70955 (or 70953 counting only the distinct ones).

The product of its digits is 373248, while the sum is 48.

The square root of 39988164 is about 6323.6195331471. The cubic root of 39988164 is about 341.9614538822.

The spelling of 39988164 in words is "thirty-nine million, nine hundred eighty-eight thousand, one hundred sixty-four".