397636476 has 24 divisors (see below), whose sum is σ = 929074944. Its totient is φ = 132366000.

The previous prime is 397636471. The next prime is 397636517. The reversal of 397636476 is 674636793.

It is a super-2 number, since 2×397636476² = 316229534091397152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397636471) 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 7 ways as a sum of consecutive naturals, for example, 13050 + ... + 31073.

It is an arithmetic number, because the mean of its divisors is an integer number (38711456).

Almost surely, 2^397636476 is an apocalyptic number.

It is an amenable number.

397636476 is an abundant number, since it is smaller than the sum of its proper divisors (531438468).

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

397636476 is a wasteful number, since it uses less digits than its factorization.

397636476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44881 (or 44879 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 51.

The square root of 397636476 is about 19940.8243560792. The cubic root of 397636476 is about 735.3522158439.

The spelling of 397636476 in words is "three hundred ninety-seven million, six hundred thirty-six thousand, four hundred seventy-six".