79919933 has 2 divisors, whose sum is σ = 79919934. Its totient is φ = 79919932.

The previous prime is 79919923. The next prime is 79919971. The reversal of 79919933 is 33991997.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79512889 + 407044 = 8917^2 + 638^2 .

It is a cyclic number.

It is not a de Polignac number, because 79919933 - 2¹² = 79915837 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79919923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39959966 + 39959967.

It is an arithmetic number, because the mean of its divisors is an integer number (39959967).

Almost surely, 2^79919933 is an apocalyptic number.

It is an amenable number.

79919933 is a deficient number, since it is larger than the sum of its proper divisors (1).

79919933 is an equidigital number, since it uses as much as digits as its factorization.

79919933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 413343, while the sum is 50.

The square root of 79919933 is about 8939.7949081620. The cubic root of 79919933 is about 430.7431407545.

The spelling of 79919933 in words is "seventy-nine million, nine hundred nineteen thousand, nine hundred thirty-three".