799261609 has 2 divisors, whose sum is σ = 799261610. Its totient is φ = 799261608.

The previous prime is 799261583. The next prime is 799261669. The reversal of 799261609 is 906162997.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 519703209 + 279558400 = 22797^2 + 16720^2 .

It is a cyclic number.

It is not a de Polignac number, because 799261609 - 2⁷ = 799261481 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (799261669) 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, 399630804 + 399630805.

It is an arithmetic number, because the mean of its divisors is an integer number (399630805).

Almost surely, 2^799261609 is an apocalyptic number.

It is an amenable number.

799261609 is a deficient number, since it is larger than the sum of its proper divisors (1).

799261609 is an equidigital number, since it uses as much as digits as its factorization.

799261609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 367416, while the sum is 49.

The square root of 799261609 is about 28271.2152020390. The cubic root of 799261609 is about 928.0320698545.

The spelling of 799261609 in words is "seven hundred ninety-nine million, two hundred sixty-one thousand, six hundred nine".