79719313 has 2 divisors, whose sum is σ = 79719314. Its totient is φ = 79719312.

The previous prime is 79719301. The next prime is 79719317. The reversal of 79719313 is 31391797.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53831569 + 25887744 = 7337^2 + 5088^2 .

It is an emirp because it is prime and its reverse (31391797) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79719313 - 2⁵ = 79719281 is a prime.

It is not a weakly prime, because it can be changed into another prime (79719317) by changing a digit.

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

It is an upside-down number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39859656 + 39859657.

It is an arithmetic number, because the mean of its divisors is an integer number (39859657).

Almost surely, 2^79719313 is an apocalyptic number.

It is an amenable number.

79719313 is a deficient number, since it is larger than the sum of its proper divisors (1).

79719313 is an equidigital number, since it uses as much as digits as its factorization.

79719313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35721, while the sum is 40.

The square root of 79719313 is about 8928.5672422847. The cubic root of 79719313 is about 430.3824126469.

The spelling of 79719313 in words is "seventy-nine million, seven hundred nineteen thousand, three hundred thirteen".