39878968 has 8 divisors (see below), whose sum is σ = 74773080. Its totient is φ = 19939480.

The previous prime is 39878959. The next prime is 39879001. The reversal of 39878968 is 86987893.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2492428 + ... + 2492443.

It is an arithmetic number, because the mean of its divisors is an integer number (9346635).

Almost surely, 2^39878968 is an apocalyptic number.

It is an amenable number.

39878968 is a deficient number, since it is larger than the sum of its proper divisors (34894112).

39878968 is a wasteful number, since it uses less digits than its factorization.

39878968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4984877 (or 4984873 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 58.

The square root of 39878968 is about 6314.9796515903. The cubic root of 39878968 is about 341.6499044986.

The spelling of 39878968 in words is "thirty-nine million, eight hundred seventy-eight thousand, nine hundred sixty-eight".