79948871 has 2 divisors, whose sum is σ = 79948872. Its totient is φ = 79948870.

The previous prime is 79948861. The next prime is 79948879. The reversal of 79948871 is 17884997.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79948871 - 2²⁶ = 12840007 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79948879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39974435 + 39974436.

It is an arithmetic number, because the mean of its divisors is an integer number (39974436).

Almost surely, 2^79948871 is an apocalyptic number.

79948871 is a deficient number, since it is larger than the sum of its proper divisors (1).

79948871 is an equidigital number, since it uses as much as digits as its factorization.

79948871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 53.

The square root of 79948871 is about 8941.4132551851. The cubic root of 79948871 is about 430.7951233676.

The spelling of 79948871 in words is "seventy-nine million, nine hundred forty-eight thousand, eight hundred seventy-one".