804512399 has 2 divisors, whose sum is σ = 804512400. Its totient is φ = 804512398.

The previous prime is 804512389. The next prime is 804512411. The reversal of 804512399 is 993215408.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 804512399 - 2⁸ = 804512143 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804512339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402256199 + 402256200.

It is an arithmetic number, because the mean of its divisors is an integer number (402256200).

Almost surely, 2^804512399 is an apocalyptic number.

804512399 is a deficient number, since it is larger than the sum of its proper divisors (1).

804512399 is an equidigital number, since it uses as much as digits as its factorization.

804512399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 804512399 is about 28363.9277780776. The cubic root of 804512399 is about 930.0598870750.

The spelling of 804512399 in words is "eight hundred four million, five hundred twelve thousand, three hundred ninety-nine".