791144489 has 2 divisors, whose sum is σ = 791144490. Its totient is φ = 791144488.

The previous prime is 791144479. The next prime is 791144531. The reversal of 791144489 is 984441197.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 545689600 + 245454889 = 23360^2 + 15667^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-791144489 is a prime.

It is a super-2 number, since 2×791144489² = 1251819204950142242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (791144429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395572244 + 395572245.

It is an arithmetic number, because the mean of its divisors is an integer number (395572245).

Almost surely, 2^791144489 is an apocalyptic number.

It is an amenable number.

791144489 is a deficient number, since it is larger than the sum of its proper divisors (1).

791144489 is an equidigital number, since it uses as much as digits as its factorization.

791144489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 47.

The square root of 791144489 is about 28127.2908222601. The cubic root of 791144489 is about 924.8797463346.

The spelling of 791144489 in words is "seven hundred ninety-one million, one hundred forty-four thousand, four hundred eighty-nine".