397831274 has 16 divisors (see below), whose sum is σ = 600825600. Its totient is φ = 197560944.

The previous prime is 397831267. The next prime is 397831279. The reversal of 397831274 is 472138793.

It is not an unprimeable number, because it can be changed into a prime (397831279) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 231932 + ... + 233640.

It is an arithmetic number, because the mean of its divisors is an integer number (37551600).

Almost surely, 2^397831274 is an apocalyptic number.

397831274 is a deficient number, since it is larger than the sum of its proper divisors (202994326).

397831274 is a wasteful number, since it uses less digits than its factorization.

397831274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2437.

The product of its digits is 254016, while the sum is 44.

The square root of 397831274 is about 19945.7081599025. The cubic root of 397831274 is about 735.4722767241.

The spelling of 397831274 in words is "three hundred ninety-seven million, eight hundred thirty-one thousand, two hundred seventy-four".