79072579 has 4 divisors (see below), whose sum is σ = 79576384. Its totient is φ = 78568776.

The previous prime is 79072577. The next prime is 79072619. The reversal of 79072579 is 97527097.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 79072579 - 2¹ = 79072577 is a prime.

It is a super-2 number, since 2×79072579² = 12504945499422482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79072577) 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, 251667 + ... + 251980.

It is an arithmetic number, because the mean of its divisors is an integer number (19894096).

Almost surely, 2^79072579 is an apocalyptic number.

79072579 is a deficient number, since it is larger than the sum of its proper divisors (503805).

79072579 is a wasteful number, since it uses less digits than its factorization.

79072579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503804.

The product of its (nonzero) digits is 277830, while the sum is 46.

The square root of 79072579 is about 8892.2763677250. The cubic root of 79072579 is about 429.2154053967.

The spelling of 79072579 in words is "seventy-nine million, seventy-two thousand, five hundred seventy-nine".