804194489279 has 2 divisors, whose sum is σ = 804194489280. Its totient is φ = 804194489278.

The previous prime is 804194489251. The next prime is 804194489323. The reversal of 804194489279 is 972984491408.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 804194489279 - 2⁸ = 804194489023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (804194489479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402097244639 + 402097244640.

It is an arithmetic number, because the mean of its divisors is an integer number (402097244640).

Almost surely, 2^804194489279 is an apocalyptic number.

804194489279 is a deficient number, since it is larger than the sum of its proper divisors (1).

804194489279 is an equidigital number, since it uses as much as digits as its factorization.

804194489279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41803776, while the sum is 65.

The spelling of 804194489279 in words is "eight hundred four billion, one hundred ninety-four million, four hundred eighty-nine thousand, two hundred seventy-nine".