397404275 has 6 divisors (see below), whose sum is σ = 492781332. Its totient is φ = 317923400.

The previous prime is 397404263. The next prime is 397404277. The reversal of 397404275 is 572404793.

It is not a de Polignac number, because 397404275 - 2¹⁸ = 397142131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397404277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7948061 + ... + 7948110.

It is an arithmetic number, because the mean of its divisors is an integer number (82130222).

Almost surely, 2^397404275 is an apocalyptic number.

397404275 is a deficient number, since it is larger than the sum of its proper divisors (95377057).

397404275 is a wasteful number, since it uses less digits than its factorization.

397404275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15896181 (or 15896176 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 41.

The square root of 397404275 is about 19935.0012540757. The cubic root of 397404275 is about 735.2090509370.

The spelling of 397404275 in words is "three hundred ninety-seven million, four hundred four thousand, two hundred seventy-five".