79065539 has 4 divisors (see below), whose sum is σ = 90360624. Its totient is φ = 67770456.

The previous prime is 79065533. The next prime is 79065541. The reversal of 79065539 is 93556097.

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 79065539 - 2⁴ = 79065523 is a prime.

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 79065539.

It is not an unprimeable number, because it can be changed into a prime (79065533) 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, 5647532 + ... + 5647545.

It is an arithmetic number, because the mean of its divisors is an integer number (22590156).

Almost surely, 2^79065539 is an apocalyptic number.

79065539 is a deficient number, since it is larger than the sum of its proper divisors (11295085).

79065539 is a wasteful number, since it uses less digits than its factorization.

79065539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11295084.

The product of its (nonzero) digits is 255150, while the sum is 44.

The square root of 79065539 is about 8891.8805097684. The cubic root of 79065539 is about 429.2026670317.

The spelling of 79065539 in words is "seventy-nine million, sixty-five thousand, five hundred thirty-nine".