39638164 has 12 divisors (see below), whose sum is σ = 70344288. Its totient is φ = 19539800.

The previous prime is 39638153. The next prime is 39638167. The reversal of 39638164 is 46183693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39638167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69502 + ... + 70069.

It is an arithmetic number, because the mean of its divisors is an integer number (5862024).

Almost surely, 2^39638164 is an apocalyptic number.

It is an amenable number.

39638164 is a deficient number, since it is larger than the sum of its proper divisors (30706124).

39638164 is a wasteful number, since it uses less digits than its factorization.

39638164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139646 (or 139644 counting only the distinct ones).

The product of its digits is 93312, while the sum is 40.

The square root of 39638164 is about 6295.8846876352. The cubic root of 39638164 is about 340.9608460877.

The spelling of 39638164 in words is "thirty-nine million, six hundred thirty-eight thousand, one hundred sixty-four".