79947167 has 4 divisors (see below), whose sum is σ = 80023440. Its totient is φ = 79870896.

The previous prime is 79947143. The next prime is 79947169. The reversal of 79947167 is 76174997.

It is a happy number.

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 79947167 - 2¹⁰ = 79946143 is a prime.

It is a super-2 number, since 2×79947167² = 12783099022651778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79947169) 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, 36542 + ... + 38667.

It is an arithmetic number, because the mean of its divisors is an integer number (20005860).

Almost surely, 2^79947167 is an apocalyptic number.

79947167 is a deficient number, since it is larger than the sum of its proper divisors (76273).

79947167 is a wasteful number, since it uses less digits than its factorization.

79947167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76272.

The product of its digits is 666792, while the sum is 50.

The square root of 79947167 is about 8941.3179677271. The cubic root of 79947167 is about 430.7920627444.

The spelling of 79947167 in words is "seventy-nine million, nine hundred forty-seven thousand, one hundred sixty-seven".