397320773 has 4 divisors (see below), whose sum is σ = 400353888. Its totient is φ = 394287660.

The previous prime is 397320739. The next prime is 397320779. The reversal of 397320773 is 377023793.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 377023793 = 773 ⋅487741.

It is a cyclic number.

It is not a de Polignac number, because 397320773 - 2¹⁴ = 397304389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 397320773.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397320779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1516361 + ... + 1516622.

It is an arithmetic number, because the mean of its divisors is an integer number (100088472).

Almost surely, 2^397320773 is an apocalyptic number.

It is an amenable number.

397320773 is a deficient number, since it is larger than the sum of its proper divisors (3033115).

397320773 is a wasteful number, since it uses less digits than its factorization.

397320773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3033114.

The product of its (nonzero) digits is 166698, while the sum is 41.

The square root of 397320773 is about 19932.9067875210. The cubic root of 397320773 is about 735.1575536496.

The spelling of 397320773 in words is "three hundred ninety-seven million, three hundred twenty thousand, seven hundred seventy-three".