79988767 has 2 divisors, whose sum is σ = 79988768. Its totient is φ = 79988766.

The previous prime is 79988749. The next prime is 79988771. The reversal of 79988767 is 76788997.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79988767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79988717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39994383 + 39994384.

It is an arithmetic number, because the mean of its divisors is an integer number (39994384).

Almost surely, 2^79988767 is an apocalyptic number.

79988767 is a deficient number, since it is larger than the sum of its proper divisors (1).

79988767 is an equidigital number, since it uses as much as digits as its factorization.

79988767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10668672, while the sum is 61.

The square root of 79988767 is about 8943.6439441650. The cubic root of 79988767 is about 430.8667697583.

The spelling of 79988767 in words is "seventy-nine million, nine hundred eighty-eight thousand, seven hundred sixty-seven".