39664016 has 20 divisors (see below), whose sum is σ = 87827712. Its totient is φ = 16998816.

The previous prime is 39663997. The next prime is 39664019. The reversal of 39664016 is 61046693.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (39664019) 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, 176960 + ... + 177183.

Almost surely, 2^39664016 is an apocalyptic number.

It is an amenable number.

39664016 is an abundant number, since it is smaller than the sum of its proper divisors (48163696).

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

39664016 is a wasteful number, since it uses less digits than its factorization.

39664016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354158 (or 354152 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 39664016 is about 6297.9374401466. The cubic root of 39664016 is about 341.0349548365.

The spelling of 39664016 in words is "thirty-nine million, six hundred sixty-four thousand, sixteen".