79785473 has 2 divisors, whose sum is σ = 79785474. Its totient is φ = 79785472.

The previous prime is 79785463. The next prime is 79785479. The reversal of 79785473 is 37458797.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78021889 + 1763584 = 8833^2 + 1328^2 .

It is an emirp because it is prime and its reverse (37458797) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79785473 - 2⁴ = 79785457 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (79785479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39892736 + 39892737.

It is an arithmetic number, because the mean of its divisors is an integer number (39892737).

Almost surely, 2^79785473 is an apocalyptic number.

It is an amenable number.

79785473 is a deficient number, since it is larger than the sum of its proper divisors (1).

79785473 is an equidigital number, since it uses as much as digits as its factorization.

79785473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1481760, while the sum is 50.

The square root of 79785473 is about 8932.2714356428. The cubic root of 79785473 is about 430.5014395425.

The spelling of 79785473 in words is "seventy-nine million, seven hundred eighty-five thousand, four hundred seventy-three".