813389882 has 8 divisors (see below), whose sum is σ = 1220218452. Its totient is φ = 406650400.

The previous prime is 813389881. The next prime is 813389891. The reversal of 813389882 is 288983318.

813389882 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 566868481 + 246521401 = 23809^2 + 15701^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 813389882.

It is not an unprimeable number, because it can be changed into a prime (813389881) 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, 9782 + ... + 41502.

Almost surely, 2^813389882 is an apocalyptic number.

813389882 is a deficient number, since it is larger than the sum of its proper divisors (406828570).

813389882 is a wasteful number, since it uses less digits than its factorization.

813389882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44544.

The product of its digits is 663552, while the sum is 50.

The square root of 813389882 is about 28519.9909186521. The cubic root of 813389882 is about 933.4683310115.

The spelling of 813389882 in words is "eight hundred thirteen million, three hundred eighty-nine thousand, eight hundred eighty-two".