79944671 has 4 divisors (see below), whose sum is σ = 79979472. Its totient is φ = 79909872.

The previous prime is 79944661. The next prime is 79944673. The reversal of 79944671 is 17644997.

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: 17644997 = 17 ⋅1037941.

It is a cyclic number.

It is not a de Polignac number, because 79944671 - 2⁶ = 79944607 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 (79944673) 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, 13691 + ... + 18636.

It is an arithmetic number, because the mean of its divisors is an integer number (19994868).

Almost surely, 2^79944671 is an apocalyptic number.

79944671 is a deficient number, since it is larger than the sum of its proper divisors (34801).

79944671 is a wasteful number, since it uses less digits than its factorization.

79944671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34800.

The product of its digits is 381024, while the sum is 47.

The square root of 79944671 is about 8941.1783898992. The cubic root of 79944671 is about 430.7875794995.

The spelling of 79944671 in words is "seventy-nine million, nine hundred forty-four thousand, six hundred seventy-one".