79297489 has 2 divisors, whose sum is σ = 79297490. Its totient is φ = 79297488.

The previous prime is 79297483. The next prime is 79297501. The reversal of 79297489 is 98479297.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42185025 + 37112464 = 6495^2 + 6092^2 .

It is a cyclic number.

It is not a de Polignac number, because 79297489 - 2²¹ = 77200337 is a prime.

It is not a weakly prime, because it can be changed into another prime (79297483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39648744 + 39648745.

It is an arithmetic number, because the mean of its divisors is an integer number (39648745).

Almost surely, 2^79297489 is an apocalyptic number.

It is an amenable number.

79297489 is a deficient number, since it is larger than the sum of its proper divisors (1).

79297489 is an equidigital number, since it uses as much as digits as its factorization.

79297489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 55.

The square root of 79297489 is about 8904.9137558990. The cubic root of 79297489 is about 429.6219662895.

The spelling of 79297489 in words is "seventy-nine million, two hundred ninety-seven thousand, four hundred eighty-nine".