79850117 has 2 divisors, whose sum is σ = 79850118. Its totient is φ = 79850116.

The previous prime is 79850059. The next prime is 79850161. The reversal of 79850117 is 71105897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75498721 + 4351396 = 8689^2 + 2086^2 .

It is a cyclic number.

It is not a de Polignac number, because 79850117 - 2¹⁶ = 79784581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79850167) 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, 39925058 + 39925059.

It is an arithmetic number, because the mean of its divisors is an integer number (39925059).

Almost surely, 2^79850117 is an apocalyptic number.

It is an amenable number.

79850117 is a deficient number, since it is larger than the sum of its proper divisors (1).

79850117 is an equidigital number, since it uses as much as digits as its factorization.

79850117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 38.

The square root of 79850117 is about 8935.8892674428. The cubic root of 79850117 is about 430.6176754996.

The spelling of 79850117 in words is "seventy-nine million, eight hundred fifty thousand, one hundred seventeen".