13098609 has 12 divisors (see below), whose sum is σ = 19180356. Its totient is φ = 8612352.

The previous prime is 13098601. The next prime is 13098611. The reversal of 13098609 is 90689031.

It can be written as a sum of positive squares in 2 ways, for example, as 4717584 + 8381025 = 2172^2 + 2895^2 .

It is not a de Polignac number, because 13098609 - 2³ = 13098601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13098601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9312 + ... + 10625.

It is an arithmetic number, because the mean of its divisors is an integer number (1598363).

Almost surely, 2^13098609 is an apocalyptic number.

It is an amenable number.

13098609 is a deficient number, since it is larger than the sum of its proper divisors (6081747).

13098609 is a wasteful number, since it uses less digits than its factorization.

13098609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20016 (or 20013 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 13098609 is about 3619.2000497347. The cubic root of 13098609 is about 235.7264917725.

The spelling of 13098609 in words is "thirteen million, ninety-eight thousand, six hundred nine".