79223812 has 12 divisors (see below), whose sum is σ = 139654620. Its totient is φ = 39322496.

The previous prime is 79223797. The next prime is 79223813. The reversal of 79223812 is 21832297.

It can be written as a sum of positive squares in 2 ways, for example, as 68161536 + 11062276 = 8256^2 + 3326^2 .

It is a super-2 number, since 2×79223812² = 12552824775622688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (79223813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71737 + ... + 72832.

It is an arithmetic number, because the mean of its divisors is an integer number (11637885).

Almost surely, 2^79223812 is an apocalyptic number.

It is an amenable number.

79223812 is a deficient number, since it is larger than the sum of its proper divisors (60430808).

79223812 is a wasteful number, since it uses less digits than its factorization.

79223812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144710 (or 144708 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The square root of 79223812 is about 8900.7759212329. The cubic root of 79223812 is about 429.4888680611.

The spelling of 79223812 in words is "seventy-nine million, two hundred twenty-three thousand, eight hundred twelve".