79871263 has 4 divisors (see below), whose sum is σ = 80049600. Its totient is φ = 79692928.

The previous prime is 79871251. The next prime is 79871273. The reversal of 79871263 is 36217897.

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: 36217897 = 29 ⋅1248893.

It is a cyclic number.

It is not a de Polignac number, because 79871263 - 2⁹ = 79870751 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 (79871213) 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, 88495 + ... + 89392.

It is an arithmetic number, because the mean of its divisors is an integer number (20012400).

Almost surely, 2^79871263 is an apocalyptic number.

79871263 is a deficient number, since it is larger than the sum of its proper divisors (178337).

79871263 is a wasteful number, since it uses less digits than its factorization.

79871263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178336.

The product of its digits is 127008, while the sum is 43.

The square root of 79871263 is about 8937.0723953653. The cubic root of 79871263 is about 430.6556843677.

The spelling of 79871263 in words is "seventy-nine million, eight hundred seventy-one thousand, two hundred sixty-three".