397060805 has 4 divisors (see below), whose sum is σ = 476472972. Its totient is φ = 317648640.

The previous prime is 397060757. The next prime is 397060849. The reversal of 397060805 is 508060793.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58721569 + 338339236 = 7663^2 + 18394^2 .

It is not a de Polignac number, because 397060805 - 2⁸ = 397060549 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 39706076 + ... + 39706085.

It is an arithmetic number, because the mean of its divisors is an integer number (119118243).

Almost surely, 2^397060805 is an apocalyptic number.

It is an amenable number.

397060805 is a deficient number, since it is larger than the sum of its proper divisors (79412167).

397060805 is an equidigital number, since it uses as much as digits as its factorization.

397060805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79412166.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 397060805 is about 19926.3846444858. The cubic root of 397060805 is about 734.9971801764.

The spelling of 397060805 in words is "three hundred ninety-seven million, sixty thousand, eight hundred five".