39688964 has 12 divisors (see below), whose sum is σ = 79377984. Its totient is φ = 17009544.

The previous prime is 39688919. The next prime is 39688969. The reversal of 39688964 is 46988693.

39688964 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (39688969) 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, 708704 + ... + 708759.

It is an arithmetic number, because the mean of its divisors is an integer number (6614832).

Almost surely, 2^39688964 is an apocalyptic number.

It is an amenable number.

39688964 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

39688964 is a wasteful number, since it uses less digits than its factorization.

39688964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417474 (or 1417472 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 53.

The square root of 39688964 is about 6299.9177772412. The cubic root of 39688964 is about 341.1064416038.

The spelling of 39688964 in words is "thirty-nine million, six hundred eighty-eight thousand, nine hundred sixty-four".