397993075 has 12 divisors (see below), whose sum is σ = 496274040. Its totient is φ = 316612160.

The previous prime is 397993067. The next prime is 397993087. The reversal of 397993075 is 570399793.

It is not a de Polignac number, because 397993075 - 2³ = 397993067 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39994 + ... + 48943.

It is an arithmetic number, because the mean of its divisors is an integer number (41356170).

Almost surely, 2^397993075 is an apocalyptic number.

397993075 is a deficient number, since it is larger than the sum of its proper divisors (98280965).

397993075 is a wasteful number, since it uses less digits than its factorization.

397993075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89126 (or 89121 counting only the distinct ones).

The product of its (nonzero) digits is 1607445, while the sum is 52.

The square root of 397993075 is about 19949.7637830627. The cubic root of 397993075 is about 735.5719705964.

The spelling of 397993075 in words is "three hundred ninety-seven million, nine hundred ninety-three thousand, seventy-five".