397323672 has 16 divisors (see below), whose sum is σ = 993309240. Its totient is φ = 132441216.

The previous prime is 397323659. The next prime is 397323673. The reversal of 397323672 is 276323793.

It is a super-2 number, since 2×397323672² = 315732200663127168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397323673) 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 3 ways as a sum of consecutive naturals, for example, 8277553 + ... + 8277600.

Almost surely, 2^397323672 is an apocalyptic number.

It is an amenable number.

397323672 is an abundant number, since it is smaller than the sum of its proper divisors (595985568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

397323672 is a wasteful number, since it uses less digits than its factorization.

397323672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16555162 (or 16555158 counting only the distinct ones).

The product of its digits is 285768, while the sum is 42.

The square root of 397323672 is about 19932.9795063357. The cubic root of 397323672 is about 735.1593416395.

The spelling of 397323672 in words is "three hundred ninety-seven million, three hundred twenty-three thousand, six hundred seventy-two".