38989992 has 32 divisors (see below), whose sum is σ = 99744480. Its totient is φ = 12694080.

The previous prime is 38989981. The next prime is 38990009. The reversal of 38989992 is 29998983.

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, 17859 + ... + 19922.

It is an arithmetic number, because the mean of its divisors is an integer number (3117015).

Almost surely, 2^38989992 is an apocalyptic number.

It is an amenable number.

38989992 is an abundant number, since it is smaller than the sum of its proper divisors (60754488).

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

38989992 is a wasteful number, since it uses less digits than its factorization.

38989992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37833 (or 37829 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 57.

The square root of 38989992 is about 6244.1966657049. The cubic root of 38989992 is about 339.0921339188.

The spelling of 38989992 in words is "thirty-eight million, nine hundred eighty-nine thousand, nine hundred ninety-two".