811976983 has 2 divisors, whose sum is σ = 811976984. Its totient is φ = 811976982.

The previous prime is 811976969. The next prime is 811976999. The reversal of 811976983 is 389679118.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 811976983 - 2¹⁷ = 811845911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 811976983.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (811976923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405988491 + 405988492.

It is an arithmetic number, because the mean of its divisors is an integer number (405988492).

Almost surely, 2^811976983 is an apocalyptic number.

811976983 is a deficient number, since it is larger than the sum of its proper divisors (1).

811976983 is an equidigital number, since it uses as much as digits as its factorization.

811976983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 52.

The square root of 811976983 is about 28495.2098255128. The cubic root of 811976983 is about 932.9275239924.

The spelling of 811976983 in words is "eight hundred eleven million, nine hundred seventy-six thousand, nine hundred eighty-three".