813797394 has 16 divisors (see below), whose sum is σ = 1629709632. Its totient is φ = 270913328.

The previous prime is 813797393. The next prime is 813797423. The reversal of 813797394 is 493797318.

It is not an unprimeable number, because it can be changed into a prime (813797393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83094 + ... + 92369.

It is an arithmetic number, because the mean of its divisors is an integer number (101856852).

Almost surely, 2^813797394 is an apocalyptic number.

813797394 is an abundant number, since it is smaller than the sum of its proper divisors (815912238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

813797394 is a wasteful number, since it uses less digits than its factorization.

813797394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176241.

The product of its digits is 1143072, while the sum is 51.

The square root of 813797394 is about 28527.1343460923. The cubic root of 813797394 is about 933.6241955996.

The spelling of 813797394 in words is "eight hundred thirteen million, seven hundred ninety-seven thousand, three hundred ninety-four".