397391476 has 12 divisors (see below), whose sum is σ = 695632420. Its totient is φ = 198639360.

The previous prime is 397391471. The next prime is 397391503. The reversal of 397391476 is 674193793.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 335768976 + 61622500 = 18324^2 + 7850^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397391471) 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 3 ways as a sum of consecutive naturals, for example, 4486 + ... + 28546.

Almost surely, 2^397391476 is an apocalyptic number.

It is an amenable number.

397391476 is a deficient number, since it is larger than the sum of its proper divisors (298240944).

397391476 is a wasteful number, since it uses less digits than its factorization.

397391476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28194 (or 28192 counting only the distinct ones).

The product of its digits is 857304, while the sum is 49.

The square root of 397391476 is about 19934.6802332016. The cubic root of 397391476 is about 735.2011580160.

The spelling of 397391476 in words is "three hundred ninety-seven million, three hundred ninety-one thousand, four hundred seventy-six".