813994488 has 32 divisors (see below), whose sum is σ = 2261096400. Its totient is φ = 271331424.

The previous prime is 813994471. The next prime is 813994499. The reversal of 813994488 is 884499318.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1884031 + ... + 1884462.

Almost surely, 2^813994488 is an apocalyptic number.

It is an amenable number.

813994488 is an abundant number, since it is smaller than the sum of its proper divisors (1447101912).

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

813994488 is a wasteful number, since it uses less digits than its factorization.

813994488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3768508 (or 3768498 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 813994488 is about 28530.5886374607. The cubic root of 813994488 is about 933.6995611535.

The spelling of 813994488 in words is "eight hundred thirteen million, nine hundred ninety-four thousand, four hundred eighty-eight".