79165993 has 2 divisors, whose sum is σ = 79165994. Its totient is φ = 79165992.

The previous prime is 79165949. The next prime is 79165997. The reversal of 79165993 is 39956197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61968384 + 17197609 = 7872^2 + 4147^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79165993 is a prime.

It is not a weakly prime, because it can be changed into another prime (79165997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39582996 + 39582997.

It is an arithmetic number, because the mean of its divisors is an integer number (39582997).

Almost surely, 2^79165993 is an apocalyptic number.

It is an amenable number.

79165993 is a deficient number, since it is larger than the sum of its proper divisors (1).

79165993 is an equidigital number, since it uses as much as digits as its factorization.

79165993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 459270, while the sum is 49.

The square root of 79165993 is about 8897.5273531471. The cubic root of 79165993 is about 429.3843596657.

The spelling of 79165993 in words is "seventy-nine million, one hundred sixty-five thousand, nine hundred ninety-three".