39979064 has 8 divisors (see below), whose sum is σ = 74960760. Its totient is φ = 19989528.

The previous prime is 39979063. The next prime is 39979073. The reversal of 39979064 is 46097993.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39979063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2498684 + ... + 2498699.

It is an arithmetic number, because the mean of its divisors is an integer number (9370095).

Almost surely, 2^39979064 is an apocalyptic number.

It is an amenable number.

39979064 is a deficient number, since it is larger than the sum of its proper divisors (34981696).

39979064 is a wasteful number, since it uses less digits than its factorization.

39979064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4997389 (or 4997385 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 47.

The square root of 39979064 is about 6322.8999675782. The cubic root of 39979064 is about 341.9355121618.

The spelling of 39979064 in words is "thirty-nine million, nine hundred seventy-nine thousand, sixty-four".