79259993 has 4 divisors (see below), whose sum is σ = 79399860. Its totient is φ = 79120128.

The previous prime is 79259981. The next prime is 79260007. The reversal of 79259993 is 39995297.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39995297 = 3673 ⋅10889.

It can be written as a sum of positive squares in 2 ways, for example, as 44249104 + 35010889 = 6652^2 + 5917^2 .

It is a cyclic number.

It is not a de Polignac number, because 79259993 - 2¹⁶ = 79194457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79259903) 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, 69080 + ... + 70217.

It is an arithmetic number, because the mean of its divisors is an integer number (19849965).

Almost surely, 2^79259993 is an apocalyptic number.

It is an amenable number.

79259993 is a deficient number, since it is larger than the sum of its proper divisors (139867).

79259993 is a wasteful number, since it uses less digits than its factorization.

79259993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139866.

The product of its digits is 1377810, while the sum is 53.

The square root of 79259993 is about 8902.8081524876. The cubic root of 79259993 is about 429.5542397020.

The spelling of 79259993 in words is "seventy-nine million, two hundred fifty-nine thousand, nine hundred ninety-three".