79935797 has 2 divisors, whose sum is σ = 79935798. Its totient is φ = 79935796.

The previous prime is 79935781. The next prime is 79935811. The reversal of 79935797 is 79753997.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76195441 + 3740356 = 8729^2 + 1934^2 .

It is a cyclic number.

It is not a de Polignac number, because 79935797 - 2⁴ = 79935781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79935707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39967898 + 39967899.

It is an arithmetic number, because the mean of its divisors is an integer number (39967899).

Almost surely, 2^79935797 is an apocalyptic number.

It is an amenable number.

79935797 is a deficient number, since it is larger than the sum of its proper divisors (1).

79935797 is an equidigital number, since it uses as much as digits as its factorization.

79935797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3750705, while the sum is 56.

The square root of 79935797 is about 8940.6821328129. The cubic root of 79935797 is about 430.7716395151.

The spelling of 79935797 in words is "seventy-nine million, nine hundred thirty-five thousand, seven hundred ninety-seven".