397322775 has 36 divisors (see below), whose sum is σ = 749112520. Its totient is φ = 200750400.

The previous prime is 397322747. The next prime is 397322791. The reversal of 397322775 is 577223793.

It is not a de Polignac number, because 397322775 - 2⁶ = 397322711 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 397322775.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 42196 + ... + 50745.

Almost surely, 2^397322775 is an apocalyptic number.

397322775 is a deficient number, since it is larger than the sum of its proper divisors (351789745).

397322775 is a wasteful number, since it uses less digits than its factorization.

397322775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92976 (or 92968 counting only the distinct ones).

The product of its digits is 555660, while the sum is 45.

The square root of 397322775 is about 19932.9570059236. The cubic root of 397322775 is about 735.1587884059.

The spelling of 397322775 in words is "three hundred ninety-seven million, three hundred twenty-two thousand, seven hundred seventy-five".