397006779 has 8 divisors (see below), whose sum is σ = 570061072. Its totient is φ = 244311840.

The previous prime is 397006759. The next prime is 397006793. The reversal of 397006779 is 977600793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 397006779 - 2⁷ = 397006651 is a prime.

It is a super-2 number, since 2×397006779² = 315228765143909682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397006759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5089792 + ... + 5089869.

It is an arithmetic number, because the mean of its divisors is an integer number (71257634).

Almost surely, 2^397006779 is an apocalyptic number.

397006779 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

397006779 is a deficient number, since it is larger than the sum of its proper divisors (173054293).

397006779 is a wasteful number, since it uses less digits than its factorization.

397006779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10179677.

The product of its (nonzero) digits is 500094, while the sum is 48.

The square root of 397006779 is about 19925.0289585737. The cubic root of 397006779 is about 734.9638429157.

The spelling of 397006779 in words is "three hundred ninety-seven million, six thousand, seven hundred seventy-nine".