397550 has 12 divisors (see below), whose sum is σ = 739536. Its totient is φ = 159000.

The previous prime is 397549. The next prime is 397567. The reversal of 397550 is 55793.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3926 + ... + 4025.

It is an arithmetic number, because the mean of its divisors is an integer number (61628).

2³⁹⁷⁵⁵⁰ is an apocalyptic number.

397550 is a deficient number, since it is larger than the sum of its proper divisors (341986).

397550 is a wasteful number, since it uses less digits than its factorization.

397550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7963 (or 7958 counting only the distinct ones).

The product of its (nonzero) digits is 4725, while the sum is 29.

The square root of 397550 is about 630.5156619784. The cubic root of 397550 is about 73.5298905067.

The spelling of 397550 in words is "three hundred ninety-seven thousand, five hundred fifty".