15799009 has 2 divisors, whose sum is σ = 15799010. Its totient is φ = 15799008.

The previous prime is 15798943. The next prime is 15799019. The reversal of 15799009 is 90099751.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12054784 + 3744225 = 3472^2 + 1935^2 .

It is a cyclic number.

It is not a de Polignac number, because 15799009 - 2¹⁵ = 15766241 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15799019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7899504 + 7899505.

It is an arithmetic number, because the mean of its divisors is an integer number (7899505).

Almost surely, 2^15799009 is an apocalyptic number.

It is an amenable number.

15799009 is a deficient number, since it is larger than the sum of its proper divisors (1).

15799009 is an equidigital number, since it uses as much as digits as its factorization.

15799009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25515, while the sum is 40.

The square root of 15799009 is about 3974.7967243621. The cubic root of 15799009 is about 250.9246240654.

The spelling of 15799009 in words is "fifteen million, seven hundred ninety-nine thousand, nine".