79075907749 has 8 divisors (see below), whose sum is σ = 80471061720. Its totient is φ = 77689184256.

The previous prime is 79075907717. The next prime is 79075907753. The reversal of 79075907749 is 94770957097.

It can be written as a sum of positive squares in 4 ways, for example, as 65569284225 + 13506623524 = 256065^2 + 116218^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 79075907749 - 2⁵ = 79075907717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79075907249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2088694 + ... + 2126215.

It is an arithmetic number, because the mean of its divisors is an integer number (10058882715).

Almost surely, 2^79075907749 is an apocalyptic number.

It is an amenable number.

79075907749 is a deficient number, since it is larger than the sum of its proper divisors (1395153971).

79075907749 is a wasteful number, since it uses less digits than its factorization.

79075907749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4215239.

The product of its (nonzero) digits is 35006580, while the sum is 64.

The spelling of 79075907749 in words is "seventy-nine billion, seventy-five million, nine hundred seven thousand, seven hundred forty-nine".