798400811 has 4 divisors (see below), whose sum is σ = 859816272. Its totient is φ = 736985352.

The previous prime is 798400789. The next prime is 798400847. The reversal of 798400811 is 118004897.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 118004897 = 59 ⋅2000083.

It is a cyclic number.

It is not a de Polignac number, because 798400811 - 2²² = 794206507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (798400111) 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, 30707711 + ... + 30707736.

It is an arithmetic number, because the mean of its divisors is an integer number (214954068).

Almost surely, 2^798400811 is an apocalyptic number.

798400811 is a deficient number, since it is larger than the sum of its proper divisors (61415461).

798400811 is a wasteful number, since it uses less digits than its factorization.

798400811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61415460.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 798400811 is about 28255.9871708635. The cubic root of 798400811 is about 927.6987892796.

The spelling of 798400811 in words is "seven hundred ninety-eight million, four hundred thousand, eight hundred eleven".