39397668 has 12 divisors (see below), whose sum is σ = 91927920. Its totient is φ = 13132552.

The previous prime is 39397667. The next prime is 39397681. The reversal of 39397668 is 86679393.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 39397668.

It is not an unprimeable number, because it can be changed into a prime (39397661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1641558 + ... + 1641581.

It is an arithmetic number, because the mean of its divisors is an integer number (7660660).

Almost surely, 2^39397668 is an apocalyptic number.

It is an amenable number.

39397668 is an abundant number, since it is smaller than the sum of its proper divisors (52530252).

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

39397668 is a wasteful number, since it uses less digits than its factorization.

39397668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283146 (or 3283144 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 51.

The square root of 39397668 is about 6276.7561685954. The cubic root of 39397668 is about 340.2698779975.

The spelling of 39397668 in words is "thirty-nine million, three hundred ninety-seven thousand, six hundred sixty-eight".