790891489 has 2 divisors, whose sum is σ = 790891490. Its totient is φ = 790891488.

The previous prime is 790891481. The next prime is 790891523. The reversal of 790891489 is 984198097.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 740765089 + 50126400 = 27217^2 + 7080^2 .

It is a cyclic number.

It is not a de Polignac number, because 790891489 - 2³ = 790891481 is a prime.

It is not a weakly prime, because it can be changed into another prime (790891481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395445744 + 395445745.

It is an arithmetic number, because the mean of its divisors is an integer number (395445745).

Almost surely, 2^790891489 is an apocalyptic number.

It is an amenable number.

790891489 is a deficient number, since it is larger than the sum of its proper divisors (1).

790891489 is an equidigital number, since it uses as much as digits as its factorization.

790891489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The square root of 790891489 is about 28122.7930511889. The cubic root of 790891489 is about 924.7811467629.

The spelling of 790891489 in words is "seven hundred ninety million, eight hundred ninety-one thousand, four hundred eighty-nine".