38917984 has 24 divisors (see below), whose sum is σ = 87565968. Its totient is φ = 16679040.

The previous prime is 38917943. The next prime is 38918003. The reversal of 38917984 is 48971983.

It is a happy number.

It is a congruent number.

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, 86647 + ... + 87094.

It is an arithmetic number, because the mean of its divisors is an integer number (3648582).

Almost surely, 2^38917984 is an apocalyptic number.

It is an amenable number.

38917984 is an abundant number, since it is smaller than the sum of its proper divisors (48647984).

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

38917984 is a wasteful number, since it uses less digits than its factorization.

38917984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173758 (or 173750 counting only the distinct ones).

The product of its digits is 435456, while the sum is 49.

The square root of 38917984 is about 6238.4280071185. The cubic root of 38917984 is about 338.8832564424.

The spelling of 38917984 in words is "thirty-eight million, nine hundred seventeen thousand, nine hundred eighty-four".