38931893 has 64 divisors (see below), whose sum is σ = 58060800. Its totient is φ = 25090560.

The previous prime is 38931869. The next prime is 38931923. The reversal of 38931893 is 39813983.

It is not a de Polignac number, because 38931893 - 2⁸ = 38931637 is a prime.

Its product of digits (139968) is a multiple of the sum of its prime divisors (162).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38931293) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 437393 + ... + 437481.

It is an arithmetic number, because the mean of its divisors is an integer number (907200).

Almost surely, 2^38931893 is an apocalyptic number.

It is an amenable number.

38931893 is a deficient number, since it is larger than the sum of its proper divisors (19128907).

38931893 is a wasteful number, since it uses less digits than its factorization.

38931893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162.

The product of its digits is 139968, while the sum is 44.

The square root of 38931893 is about 6239.5426915760. The cubic root of 38931893 is about 338.9236230914.

The spelling of 38931893 in words is "thirty-eight million, nine hundred thirty-one thousand, eight hundred ninety-three".