39342978 has 24 divisors (see below), whose sum is σ = 85368816. Its totient is φ = 13095000.

The previous prime is 39342931. The next prime is 39343001. The reversal of 39342978 is 87924393.

It is a happy number.

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, 16353 + ... + 18603.

It is an arithmetic number, because the mean of its divisors is an integer number (3557034).

Almost surely, 2^39342978 is an apocalyptic number.

39342978 is an abundant number, since it is smaller than the sum of its proper divisors (46025838).

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

39342978 is a wasteful number, since it uses less digits than its factorization.

39342978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3230 (or 3227 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 39342978 is about 6272.3981059879. The cubic root of 39342978 is about 340.1123561770.

The spelling of 39342978 in words is "thirty-nine million, three hundred forty-two thousand, nine hundred seventy-eight".