79090313 has 4 divisors (see below), whose sum is σ = 79294020. Its totient is φ = 78886608.

The previous prime is 79090289. The next prime is 79090321. The reversal of 79090313 is 31309097.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42994249 + 36096064 = 6557^2 + 6008^2 .

It is a cyclic number.

It is not a de Polignac number, because 79090313 - 2⁸ = 79090057 is a prime.

It is a super-2 number, since 2×79090313² = 12510555220875938, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79090313.

It is not an unprimeable number, because it can be changed into a prime (79090513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101270 + ... + 102047.

It is an arithmetic number, because the mean of its divisors is an integer number (19823505).

Almost surely, 2^79090313 is an apocalyptic number.

It is an amenable number.

79090313 is a deficient number, since it is larger than the sum of its proper divisors (203707).

79090313 is a wasteful number, since it uses less digits than its factorization.

79090313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203706.

The product of its (nonzero) digits is 5103, while the sum is 32.

The square root of 79090313 is about 8893.2734693138. The cubic root of 79090313 is about 429.2474904218.

The spelling of 79090313 in words is "seventy-nine million, ninety thousand, three hundred thirteen".