79946369 has 2 divisors, whose sum is σ = 79946370. Its totient is φ = 79946368.

The previous prime is 79946353. The next prime is 79946387. The reversal of 79946369 is 96364997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69089344 + 10857025 = 8312^2 + 3295^2 .

It is an emirp because it is prime and its reverse (96364997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79946369 - 2⁴ = 79946353 is a prime.

It is a super-2 number, since 2×79946369² = 12782843832568322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79946369.

It is not a weakly prime, because it can be changed into another prime (79946309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39973184 + 39973185.

It is an arithmetic number, because the mean of its divisors is an integer number (39973185).

Almost surely, 2^79946369 is an apocalyptic number.

It is an amenable number.

79946369 is a deficient number, since it is larger than the sum of its proper divisors (1).

79946369 is an equidigital number, since it uses as much as digits as its factorization.

79946369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2204496, while the sum is 53.

The square root of 79946369 is about 8941.2733433220. The cubic root of 79946369 is about 430.7906294094.

The spelling of 79946369 in words is "seventy-nine million, nine hundred forty-six thousand, three hundred sixty-nine".