79739087 has 2 divisors, whose sum is σ = 79739088. Its totient is φ = 79739086.

The previous prime is 79739047. The next prime is 79739117. The reversal of 79739087 is 78093797.

It is a strong prime.

It is an emirp because it is prime and its reverse (78093797) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79739087 is a 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 (79739047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39869543 + 39869544.

It is an arithmetic number, because the mean of its divisors is an integer number (39869544).

Almost surely, 2^79739087 is an apocalyptic number.

79739087 is a deficient number, since it is larger than the sum of its proper divisors (1).

79739087 is an equidigital number, since it uses as much as digits as its factorization.

79739087 is an odious number, because the sum of its binary digits is odd.

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

The square root of 79739087 is about 8929.6745181445. The cubic root of 79739087 is about 430.4179944816.

The spelling of 79739087 in words is "seventy-nine million, seven hundred thirty-nine thousand, eighty-seven".