39678464 has 40 divisors (see below), whose sum is σ = 90613248. Its totient is φ = 17003520.

The previous prime is 39678451. The next prime is 39678469. The reversal of 39678464 is 46487693.

It is not an unprimeable number, because it can be changed into a prime (39678469) 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, 1952 + ... + 9119.

Almost surely, 2^39678464 is an apocalyptic number.

It is an amenable number.

39678464 is an abundant number, since it is smaller than the sum of its proper divisors (50934784).

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

39678464 is an equidigital number, since it uses as much as digits as its factorization.

39678464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11096 (or 11080 counting only the distinct ones).

The product of its digits is 870912, while the sum is 47.

The square root of 39678464 is about 6299.0843779076. The cubic root of 39678464 is about 341.0763582324.

The spelling of 39678464 in words is "thirty-nine million, six hundred seventy-eight thousand, four hundred sixty-four".