79564493 has 2 divisors, whose sum is σ = 79564494. Its totient is φ = 79564492.

The previous prime is 79564489. The next prime is 79564549. The reversal of 79564493 is 39446597.

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., 56505289 + 23059204 = 7517^2 + 4802^2 .

It is a cyclic number.

It is not a de Polignac number, because 79564493 - 2² = 79564489 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79564423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39782246 + 39782247.

It is an arithmetic number, because the mean of its divisors is an integer number (39782247).

Almost surely, 2^79564493 is an apocalyptic number.

It is an amenable number.

79564493 is a deficient number, since it is larger than the sum of its proper divisors (1).

79564493 is an equidigital number, since it uses as much as digits as its factorization.

79564493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 47.

The square root of 79564493 is about 8919.8931047407. The cubic root of 79564493 is about 430.1036220434.

The spelling of 79564493 in words is "seventy-nine million, five hundred sixty-four thousand, four hundred ninety-three".