79610917 has 4 divisors (see below), whose sum is σ = 80916076. Its totient is φ = 78305760.

The previous prime is 79610899. The next prime is 79610963. The reversal of 79610917 is 71901697.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71901697 = 7 ⋅10271671.

It can be written as a sum of positive squares in 2 ways, for example, as 6320196 + 73290721 = 2514^2 + 8561^2 .

It is a cyclic number.

It is not a de Polignac number, because 79610917 - 2⁷ = 79610789 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79610917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79610977) 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 in 3 ways as a sum of consecutive naturals, for example, 652488 + ... + 652609.

It is an arithmetic number, because the mean of its divisors is an integer number (20229019).

Almost surely, 2^79610917 is an apocalyptic number.

It is an amenable number.

79610917 is a deficient number, since it is larger than the sum of its proper divisors (1305159).

79610917 is a wasteful number, since it uses less digits than its factorization.

79610917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305158.

The product of its (nonzero) digits is 23814, while the sum is 40.

The square root of 79610917 is about 8922.4949985976. The cubic root of 79610917 is about 430.1872575430.

The spelling of 79610917 in words is "seventy-nine million, six hundred ten thousand, nine hundred seventeen".