39680464 has 40 divisors (see below), whose sum is σ = 79528392. Its totient is φ = 19169280.

The previous prime is 39680461. The next prime is 39680477. The reversal of 39680464 is 46408693.

It can be written as a sum of positive squares in 4 ways, for example, as 19430464 + 20250000 = 4408^2 + 4500^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39680461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61584 + ... + 62224.

Almost surely, 2^39680464 is an apocalyptic number.

It is an amenable number.

39680464 is an abundant number, since it is smaller than the sum of its proper divisors (39847928).

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

39680464 is a wasteful number, since it uses less digits than its factorization.

39680464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775 (or 769 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 39680464 is about 6299.2431291386. The cubic root of 39680464 is about 341.0820888075.

The spelling of 39680464 in words is "thirty-nine million, six hundred eighty thousand, four hundred sixty-four".