79783493 has 2 divisors, whose sum is σ = 79783494. Its totient is φ = 79783492.

The previous prime is 79783471. The next prime is 79783513. The reversal of 79783493 is 39438797.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73839649 + 5943844 = 8593^2 + 2438^2 .

It is an emirp because it is prime and its reverse (39438797) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79783493 - 2⁸ = 79783237 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79783453) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39891746 + 39891747.

It is an arithmetic number, because the mean of its divisors is an integer number (39891747).

Almost surely, 2^79783493 is an apocalyptic number.

It is an amenable number.

79783493 is a deficient number, since it is larger than the sum of its proper divisors (1).

79783493 is an equidigital number, since it uses as much as digits as its factorization.

79783493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 50.

The square root of 79783493 is about 8932.1606008849. The cubic root of 79783493 is about 430.4978783265.

The spelling of 79783493 in words is "seventy-nine million, seven hundred eighty-three thousand, four hundred ninety-three".