79919753 has 2 divisors, whose sum is σ = 79919754. Its totient is φ = 79919752.

The previous prime is 79919747. The next prime is 79919761. The reversal of 79919753 is 35791997.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79780624 + 139129 = 8932^2 + 373^2 .

It is an emirp because it is prime and its reverse (35791997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79919753 - 2¹⁸ = 79657609 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 (79919773) 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, 39959876 + 39959877.

It is an arithmetic number, because the mean of its divisors is an integer number (39959877).

Almost surely, 2^79919753 is an apocalyptic number.

It is an amenable number.

79919753 is a deficient number, since it is larger than the sum of its proper divisors (1).

79919753 is an equidigital number, since it uses as much as digits as its factorization.

79919753 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 535815, while the sum is 50.

The square root of 79919753 is about 8939.7848408113. The cubic root of 79919753 is about 430.7428173733.

The spelling of 79919753 in words is "seventy-nine million, nine hundred nineteen thousand, seven hundred fifty-three".