79220402 has 8 divisors (see below), whose sum is σ = 122928300. Its totient is φ = 38244304.

The previous prime is 79220399. The next prime is 79220417. The reversal of 79220402 is 20402297.

It can be written as a sum of positive squares in 2 ways, for example, as 72403081 + 6817321 = 8509^2 + 2611^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 682877 + ... + 682992.

Almost surely, 2^79220402 is an apocalyptic number.

79220402 is a deficient number, since it is larger than the sum of its proper divisors (43707898).

79220402 is a wasteful number, since it uses less digits than its factorization.

79220402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365900.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 79220402 is about 8900.5843628382. The cubic root of 79220402 is about 429.4827058647.

Adding to 79220402 its reverse (20402297), we get a palindrome (99622699).

The spelling of 79220402 in words is "seventy-nine million, two hundred twenty thousand, four hundred two".