397867679 has 16 divisors (see below), whose sum is σ = 439805184. Its totient is φ = 356918400.

The previous prime is 397867663. The next prime is 397867699. The reversal of 397867679 is 976768793.

It is a cyclic number.

It is not a de Polignac number, because 397867679 - 2⁴ = 397867663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397867699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 490184 + ... + 490994.

It is an arithmetic number, because the mean of its divisors is an integer number (27487824).

Almost surely, 2^397867679 is an apocalyptic number.

397867679 is a deficient number, since it is larger than the sum of its proper divisors (41937505).

397867679 is a wasteful number, since it uses less digits than its factorization.

397867679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358.

The product of its digits is 24004512, while the sum is 62.

The square root of 397867679 is about 19946.6207413687. The cubic root of 397867679 is about 735.4947100631.

The spelling of 397867679 in words is "three hundred ninety-seven million, eight hundred sixty-seven thousand, six hundred seventy-nine".