79862017 has 2 divisors, whose sum is σ = 79862018. Its totient is φ = 79862016.

The previous prime is 79861981. The next prime is 79862077. The reversal of 79862017 is 71026897.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49126081 + 30735936 = 7009^2 + 5544^2 .

It is an emirp because it is prime and its reverse (71026897) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79862017 - 2⁷ = 79861889 is a prime.

It is not a weakly prime, because it can be changed into another prime (79862077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39931008 + 39931009.

It is an arithmetic number, because the mean of its divisors is an integer number (39931009).

Almost surely, 2^79862017 is an apocalyptic number.

It is an amenable number.

79862017 is a deficient number, since it is larger than the sum of its proper divisors (1).

79862017 is an equidigital number, since it uses as much as digits as its factorization.

79862017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 79862017 is about 8936.5550969040. Note that the first 3 decimals coincide. The cubic root of 79862017 is about 430.6390659747.

The spelling of 79862017 in words is "seventy-nine million, eight hundred sixty-two thousand, seventeen".