79662329 has 2 divisors, whose sum is σ = 79662330. Its totient is φ = 79662328.

The previous prime is 79662299. The next prime is 79662361. The reversal of 79662329 is 92326697.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78943225 + 719104 = 8885^2 + 848^2 .

It is an emirp because it is prime and its reverse (92326697) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79662329 - 2¹² = 79658233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79662329.

It is not a weakly prime, because it can be changed into another prime (79652329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39831164 + 39831165.

It is an arithmetic number, because the mean of its divisors is an integer number (39831165).

Almost surely, 2^79662329 is an apocalyptic number.

It is an amenable number.

79662329 is a deficient number, since it is larger than the sum of its proper divisors (1).

79662329 is an equidigital number, since it uses as much as digits as its factorization.

79662329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 44.

The square root of 79662329 is about 8925.3755663277. The cubic root of 79662329 is about 430.2798412777.

The spelling of 79662329 in words is "seventy-nine million, six hundred sixty-two thousand, three hundred twenty-nine".