397565466 has 16 divisors (see below), whose sum is σ = 822549600. Its totient is φ = 127952048.

The previous prime is 397565449. The next prime is 397565473. The reversal of 397565466 is 664565793.

It is a happy number.

It is a Curzon 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, 1142256 + ... + 1142603.

It is an arithmetic number, because the mean of its divisors is an integer number (51409350).

Almost surely, 2^397565466 is an apocalyptic number.

397565466 is an abundant number, since it is smaller than the sum of its proper divisors (424984134).

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

397565466 is a wasteful number, since it uses less digits than its factorization.

397565466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284893.

The product of its digits is 4082400, while the sum is 51.

The square root of 397565466 is about 19939.0437584153. The cubic root of 397565466 is about 735.3084401236.

The spelling of 397565466 in words is "three hundred ninety-seven million, five hundred sixty-five thousand, four hundred sixty-six".