812364799 has 2 divisors, whose sum is σ = 812364800. Its totient is φ = 812364798.

The previous prime is 812364781. The next prime is 812364809. The reversal of 812364799 is 997463218.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 812364799 - 2¹⁹ = 811840511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (812364719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406182399 + 406182400.

It is an arithmetic number, because the mean of its divisors is an integer number (406182400).

Almost surely, 2^812364799 is an apocalyptic number.

812364799 is a deficient number, since it is larger than the sum of its proper divisors (1).

812364799 is an equidigital number, since it uses as much as digits as its factorization.

812364799 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 49.

The square root of 812364799 is about 28502.0139463863. The cubic root of 812364799 is about 933.0760284623.

The spelling of 812364799 in words is "eight hundred twelve million, three hundred sixty-four thousand, seven hundred ninety-nine".