397999268 has 12 divisors (see below), whose sum is σ = 726781440. Its totient is φ = 190347432.

The previous prime is 397999237. The next prime is 397999321. The reversal of 397999268 is 862999793.

It is a super-3 number, since 3×397999268³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 397999268.

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 3 ways as a sum of consecutive naturals, for example, 2162948 + ... + 2163131.

It is an arithmetic number, because the mean of its divisors is an integer number (60565120).

Almost surely, 2^397999268 is an apocalyptic number.

It is an amenable number.

397999268 is a deficient number, since it is larger than the sum of its proper divisors (328782172).

397999268 is a wasteful number, since it uses less digits than its factorization.

397999268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4326106 (or 4326104 counting only the distinct ones).

The product of its digits is 13226976, while the sum is 62.

The square root of 397999268 is about 19949.9189973293. The cubic root of 397999268 is about 735.5757858835.

The spelling of 397999268 in words is "three hundred ninety-seven million, nine hundred ninety-nine thousand, two hundred sixty-eight".