79866951 has 4 divisors (see below), whose sum is σ = 106489272. Its totient is φ = 53244632.

The previous prime is 79866949. The next prime is 79866961. The reversal of 79866951 is 15966897.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79866951 - 2¹ = 79866949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79866894 and 79866903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79866961) 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, 13311156 + ... + 13311161.

It is an arithmetic number, because the mean of its divisors is an integer number (26622318).

Almost surely, 2^79866951 is an apocalyptic number.

79866951 is a deficient number, since it is larger than the sum of its proper divisors (26622321).

79866951 is a wasteful number, since it uses less digits than its factorization.

79866951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26622320.

The product of its digits is 816480, while the sum is 51.

The square root of 79866951 is about 8936.8311497980. The cubic root of 79866951 is about 430.6479343098.

The spelling of 79866951 in words is "seventy-nine million, eight hundred sixty-six thousand, nine hundred fifty-one".