397291107 has 16 divisors (see below), whose sum is σ = 547731072. Its totient is φ = 255977280.

The previous prime is 397291099. The next prime is 397291171. The reversal of 397291107 is 701192793.

It is not a de Polignac number, because 397291107 - 2³ = 397291099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397291187) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1933 + ... + 28254.

It is an arithmetic number, because the mean of its divisors is an integer number (34233192).

Almost surely, 2^397291107 is an apocalyptic number.

397291107 is a deficient number, since it is larger than the sum of its proper divisors (150439965).

397291107 is a wasteful number, since it uses less digits than its factorization.

397291107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30338.

The product of its (nonzero) digits is 23814, while the sum is 39.

The square root of 397291107 is about 19932.1626272715. The cubic root of 397291107 is about 735.1392563205.

The spelling of 397291107 in words is "three hundred ninety-seven million, two hundred ninety-one thousand, one hundred seven".