39396978 has 24 divisors (see below), whose sum is σ = 85544316. Its totient is φ = 13104000.

The previous prime is 39396961. The next prime is 39396989. The reversal of 39396978 is 87969393.

It can be written as a sum of positive squares in 2 ways, for example, as 33907329 + 5489649 = 5823^2 + 2343^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7278 + ... + 11478.

Almost surely, 2^39396978 is an apocalyptic number.

39396978 is an abundant number, since it is smaller than the sum of its proper divisors (46147338).

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

39396978 is a wasteful number, since it uses less digits than its factorization.

39396978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4730 (or 4727 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 54.

The square root of 39396978 is about 6276.7012036579. The cubic root of 39396978 is about 340.2678915213.

The spelling of 39396978 in words is "thirty-nine million, three hundred ninety-six thousand, nine hundred seventy-eight".