395249972 has 24 divisors (see below), whose sum is σ = 745645152. Its totient is φ = 182239200.

The previous prime is 395249941. The next prime is 395249999. The reversal of 395249972 is 279942593.

It is a self number, because there is not a number n which added to its sum of digits gives 395249972.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57647 + ... + 64137.

It is an arithmetic number, because the mean of its divisors is an integer number (31068548).

Almost surely, 2^395249972 is an apocalyptic number.

It is an amenable number.

395249972 is a deficient number, since it is larger than the sum of its proper divisors (350395180).

395249972 is a wasteful number, since it uses less digits than its factorization.

395249972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7679 (or 7677 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 50.

The square root of 395249972 is about 19880.8946478774. The cubic root of 395249972 is about 733.8781361138.

The spelling of 395249972 in words is "three hundred ninety-five million, two hundred forty-nine thousand, nine hundred seventy-two".