79680493 has 2 divisors, whose sum is σ = 79680494. Its totient is φ = 79680492.

The previous prime is 79680451. The next prime is 79680511. The reversal of 79680493 is 39408697.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79530724 + 149769 = 8918^2 + 387^2 .

It is an emirp because it is prime and its reverse (39408697) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79680493 - 2²⁵ = 46126061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79680413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39840246 + 39840247.

It is an arithmetic number, because the mean of its divisors is an integer number (39840247).

Almost surely, 2^79680493 is an apocalyptic number.

It is an amenable number.

79680493 is a deficient number, since it is larger than the sum of its proper divisors (1).

79680493 is an equidigital number, since it uses as much as digits as its factorization.

79680493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 79680493 is about 8926.3930565487. The cubic root of 79680493 is about 430.3125418409.

The spelling of 79680493 in words is "seventy-nine million, six hundred eighty thousand, four hundred ninety-three".