397205494 has 16 divisors (see below), whose sum is σ = 687945888. Its totient is φ = 168475392.

The previous prime is 397205477. The next prime is 397205531. The reversal of 397205494 is 494502793.

It is a self number, because there is not a number n which added to its sum of digits gives 397205494.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144889 + ... + 147604.

It is an arithmetic number, because the mean of its divisors is an integer number (42996618).

Almost surely, 2^397205494 is an apocalyptic number.

397205494 is a deficient number, since it is larger than the sum of its proper divisors (290740394).

397205494 is a wasteful number, since it uses less digits than its factorization.

397205494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292599.

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 397205494 is about 19930.0149021520. The cubic root of 397205494 is about 735.0864470182.

The spelling of 397205494 in words is "three hundred ninety-seven million, two hundred five thousand, four hundred ninety-four".