397179690 has 16 divisors (see below), whose sum is σ = 953231328. Its totient is φ = 105914576.

The previous prime is 397179649. The next prime is 397179767. The reversal of 397179690 is 96971793.

397179690 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×397179690² = 315503412296992200, which contains 22 as substring.

It is an unprimeable number.

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, 6619632 + ... + 6619691.

It is an arithmetic number, because the mean of its divisors is an integer number (59576958).

Almost surely, 2^397179690 is an apocalyptic number.

397179690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

397179690 is an abundant number, since it is smaller than the sum of its proper divisors (556051638).

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

397179690 is a wasteful number, since it uses less digits than its factorization.

397179690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13239333.

The product of its (nonzero) digits is 642978, while the sum is 51.

The square root of 397179690 is about 19929.3675263416. The cubic root of 397179690 is about 735.0705286571.

The spelling of 397179690 in words is "three hundred ninety-seven million, one hundred seventy-nine thousand, six hundred ninety".