813909083 has 4 divisors (see below), whose sum is σ = 876517488. Its totient is φ = 751300680.

The previous prime is 813909077. The next prime is 813909097. The reversal of 813909083 is 380909318.

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

It is not a de Polignac number, because 813909083 - 2⁴ = 813909067 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 813909083.

It is not an unprimeable number, because it can be changed into a prime (813909013) 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, 31304183 + ... + 31304208.

It is an arithmetic number, because the mean of its divisors is an integer number (219129372).

Almost surely, 2^813909083 is an apocalyptic number.

813909083 is a deficient number, since it is larger than the sum of its proper divisors (62608405).

813909083 is a wasteful number, since it uses less digits than its factorization.

813909083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62608404.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 813909083 is about 28529.0918712811. The cubic root of 813909083 is about 933.6669051584. Note that the first 3 decimals are identical.

The spelling of 813909083 in words is "eight hundred thirteen million, nine hundred nine thousand, eighty-three".