79253789 has 2 divisors, whose sum is σ = 79253790. Its totient is φ = 79253788.

The previous prime is 79253777. The next prime is 79253809. The reversal of 79253789 is 98735297.

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., 67930564 + 11323225 = 8242^2 + 3365^2 .

It is a cyclic number.

It is not a de Polignac number, because 79253789 - 2¹² = 79249693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79253719) 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, 39626894 + 39626895.

It is an arithmetic number, because the mean of its divisors is an integer number (39626895).

Almost surely, 2^79253789 is an apocalyptic number.

It is an amenable number.

79253789 is a deficient number, since it is larger than the sum of its proper divisors (1).

79253789 is an equidigital number, since it uses as much as digits as its factorization.

79253789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 50.

The square root of 79253789 is about 8902.4597162807. The cubic root of 79253789 is about 429.5430317607.

The spelling of 79253789 in words is "seventy-nine million, two hundred fifty-three thousand, seven hundred eighty-nine".