397392867 has 12 divisors (see below), whose sum is σ = 607777560. Its totient is φ = 249344448.

The previous prime is 397392841. The next prime is 397392871. The reversal of 397392867 is 768293793.

It is not a de Polignac number, because 397392867 - 2⁶ = 397392803 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397391867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1298517 + ... + 1298822.

It is an arithmetic number, because the mean of its divisors is an integer number (50648130).

Almost surely, 2^397392867 is an apocalyptic number.

397392867 is a deficient number, since it is larger than the sum of its proper divisors (210384693).

397392867 is a wasteful number, since it uses less digits than its factorization.

397392867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2597362 (or 2597359 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 54.

The square root of 397392867 is about 19934.7151221180. The cubic root of 397392867 is about 735.2020158297.

The spelling of 397392867 in words is "three hundred ninety-seven million, three hundred ninety-two thousand, eight hundred sixty-seven".