79495861 has 2 divisors, whose sum is σ = 79495862. Its totient is φ = 79495860.

The previous prime is 79495853. The next prime is 79495877. The reversal of 79495861 is 16859497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79032100 + 463761 = 8890^2 + 681^2 .

It is an emirp because it is prime and its reverse (16859497) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79495861 - 2³ = 79495853 is a prime.

It is a super-2 number, since 2×79495861² = 12639183832262642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79435861) 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, 39747930 + 39747931.

It is an arithmetic number, because the mean of its divisors is an integer number (39747931).

Almost surely, 2^79495861 is an apocalyptic number.

It is an amenable number.

79495861 is a deficient number, since it is larger than the sum of its proper divisors (1).

79495861 is an equidigital number, since it uses as much as digits as its factorization.

79495861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 49.

The square root of 79495861 is about 8916.0451434479. The cubic root of 79495861 is about 429.9799179372.

The spelling of 79495861 in words is "seventy-nine million, four hundred ninety-five thousand, eight hundred sixty-one".