79993153 has 4 divisors (see below), whose sum is σ = 80116308. Its totient is φ = 79870000.

The previous prime is 79993129. The next prime is 79993187. The reversal of 79993153 is 35139997.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35139997 = 359 ⋅97883.

It can be written as a sum of positive squares in 2 ways, for example, as 59089969 + 20903184 = 7687^2 + 4572^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79993153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79993853) 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, 60598 + ... + 61903.

It is an arithmetic number, because the mean of its divisors is an integer number (20029077).

Almost surely, 2^79993153 is an apocalyptic number.

It is an amenable number.

79993153 is a deficient number, since it is larger than the sum of its proper divisors (123155).

79993153 is a wasteful number, since it uses less digits than its factorization.

79993153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123154.

The product of its digits is 229635, while the sum is 46.

The square root of 79993153 is about 8943.8891428729. The cubic root of 79993153 is about 430.8746448104.

The spelling of 79993153 in words is "seventy-nine million, nine hundred ninety-three thousand, one hundred fifty-three".