397443755 has 16 divisors (see below), whose sum is σ = 485334624. Its totient is φ = 312387840.

The previous prime is 397443743. The next prime is 397443763. The reversal of 397443755 is 557344793.

It is not a de Polignac number, because 397443755 - 2⁸ = 397443499 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99140 + ... + 103070.

It is an arithmetic number, because the mean of its divisors is an integer number (30333414).

Almost surely, 2^397443755 is an apocalyptic number.

397443755 is a deficient number, since it is larger than the sum of its proper divisors (87890869).

397443755 is a wasteful number, since it uses less digits than its factorization.

397443755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4286.

The product of its digits is 1587600, while the sum is 47.

The square root of 397443755 is about 19935.9914476306. The cubic root of 397443755 is about 735.2333964998.

The spelling of 397443755 in words is "three hundred ninety-seven million, four hundred forty-three thousand, seven hundred fifty-five".