397291068 has 60 divisors (see below), whose sum is σ = 1074436440. Its totient is φ = 127860768.

The previous prime is 397291043. The next prime is 397291093. The reversal of 397291068 is 860192793.

It is an interprime number because it is at equal distance from previous prime (397291043) and next prime (397291093).

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 11746 + ... + 30537.

It is an arithmetic number, because the mean of its divisors is an integer number (17907274).

Almost surely, 2^397291068 is an apocalyptic number.

It is an amenable number.

397291068 is an abundant number, since it is smaller than the sum of its proper divisors (677145372).

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

397291068 is a wasteful number, since it uses less digits than its factorization.

397291068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42328 (or 42317 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 397291068 is about 19932.1616489532. The cubic root of 397291068 is about 735.1392322656.

The spelling of 397291068 in words is "three hundred ninety-seven million, two hundred ninety-one thousand, sixty-eight".