39976644 has 24 divisors (see below), whose sum is σ = 93401280. Its totient is φ = 13308064.

The previous prime is 39976637. The next prime is 39976663. The reversal of 39976644 is 44667993.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 39976593 and 39976602.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10102 + ... + 13490.

It is an arithmetic number, because the mean of its divisors is an integer number (3891720).

Almost surely, 2^39976644 is an apocalyptic number.

It is an amenable number.

39976644 is an abundant number, since it is smaller than the sum of its proper divisors (53424636).

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

39976644 is a wasteful number, since it uses less digits than its factorization.

39976644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4379 (or 4377 counting only the distinct ones).

The product of its digits is 979776, while the sum is 48.

The square root of 39976644 is about 6322.7085967962. The cubic root of 39976644 is about 341.9286127119.

The spelling of 39976644 in words is "thirty-nine million, nine hundred seventy-six thousand, six hundred forty-four".