794421813 has 4 divisors (see below), whose sum is σ = 1059229088. Its totient is φ = 529614540.

The previous prime is 794421809. The next prime is 794421827. The reversal of 794421813 is 318124497.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 794421813 - 2² = 794421809 is a prime.

It is a super-2 number, since 2×794421813² = 1262212033940413938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (794421893) 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, 132403633 + ... + 132403638.

It is an arithmetic number, because the mean of its divisors is an integer number (264807272).

Almost surely, 2^794421813 is an apocalyptic number.

It is an amenable number.

794421813 is a deficient number, since it is larger than the sum of its proper divisors (264807275).

794421813 is a wasteful number, since it uses less digits than its factorization.

794421813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264807274.

The product of its digits is 48384, while the sum is 39.

The square root of 794421813 is about 28185.4894050112. The cubic root of 794421813 is about 926.1550947872.

The spelling of 794421813 in words is "seven hundred ninety-four million, four hundred twenty-one thousand, eight hundred thirteen".