38915964 has 36 divisors (see below), whose sum is σ = 102016824. Its totient is φ = 12971664.

The previous prime is 38915963. The next prime is 38915993. The reversal of 38915964 is 46951983.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38915963) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19047 + ... + 20990.

Almost surely, 2^38915964 is an apocalyptic number.

It is an amenable number.

38915964 is an abundant number, since it is smaller than the sum of its proper divisors (63100860).

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

38915964 is a wasteful number, since it uses less digits than its factorization.

38915964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40056 (or 40042 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 38915964 is about 6238.2661052571. The cubic root of 38915964 is about 338.8773932060.

The spelling of 38915964 in words is "thirty-eight million, nine hundred fifteen thousand, nine hundred sixty-four".