79357865 has 4 divisors (see below), whose sum is σ = 95229444. Its totient is φ = 63486288.

The previous prime is 79357823. The next prime is 79357867. The reversal of 79357865 is 56875397.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56875397 = 983 ⋅57859.

It can be written as a sum of positive squares in 2 ways, for example, as 59892121 + 19465744 = 7739^2 + 4412^2 .

It is a cyclic number.

It is not a de Polignac number, because 79357865 - 2¹⁶ = 79292329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79357867) 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, 7935782 + ... + 7935791.

It is an arithmetic number, because the mean of its divisors is an integer number (23807361).

Almost surely, 2^79357865 is an apocalyptic number.

It is an amenable number.

79357865 is a deficient number, since it is larger than the sum of its proper divisors (15871579).

79357865 is a wasteful number, since it uses less digits than its factorization.

79357865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15871578.

The product of its digits is 1587600, while the sum is 50.

The square root of 79357865 is about 8908.3031493096. The cubic root of 79357865 is about 429.7309746822.

The spelling of 79357865 in words is "seventy-nine million, three hundred fifty-seven thousand, eight hundred sixty-five".