79719853 has 2 divisors, whose sum is σ = 79719854. Its totient is φ = 79719852.

The previous prime is 79719847. The next prime is 79719901. The reversal of 79719853 is 35891797.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61418569 + 18301284 = 7837^2 + 4278^2 .

It is an emirp because it is prime and its reverse (35891797) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79719853 - 2¹³ = 79711661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79719797 and 79719806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79719833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39859926 + 39859927.

It is an arithmetic number, because the mean of its divisors is an integer number (39859927).

Almost surely, 2^79719853 is an apocalyptic number.

It is an amenable number.

79719853 is a deficient number, since it is larger than the sum of its proper divisors (1).

79719853 is an equidigital number, since it uses as much as digits as its factorization.

79719853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 476280, while the sum is 49.

The square root of 79719853 is about 8928.5974822477. The cubic root of 79719853 is about 430.3833844146.

The spelling of 79719853 in words is "seventy-nine million, seven hundred nineteen thousand, eight hundred fifty-three".