79995277 has 2 divisors, whose sum is σ = 79995278. Its totient is φ = 79995276.

The previous prime is 79995271. The next prime is 79995287. The reversal of 79995277 is 77259997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63584676 + 16410601 = 7974^2 + 4051^2 .

It is an emirp because it is prime and its reverse (77259997) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79995277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79995271) 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, 39997638 + 39997639.

It is an arithmetic number, because the mean of its divisors is an integer number (39997639).

Almost surely, 2^79995277 is an apocalyptic number.

It is an amenable number.

79995277 is a deficient number, since it is larger than the sum of its proper divisors (1).

79995277 is an equidigital number, since it uses as much as digits as its factorization.

79995277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2500470, while the sum is 55.

The square root of 79995277 is about 8944.0078823758. The cubic root of 79995277 is about 430.8784583436.

The spelling of 79995277 in words is "seventy-nine million, nine hundred ninety-five thousand, two hundred seventy-seven".