13153809 has 4 divisors (see below), whose sum is σ = 17538416. Its totient is φ = 8769204.

The previous prime is 13153807. The next prime is 13153817. The reversal of 13153809 is 90835131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13153809 - 2¹ = 13153807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13153807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2192299 + ... + 2192304.

It is an arithmetic number, because the mean of its divisors is an integer number (4384604).

Almost surely, 2^13153809 is an apocalyptic number.

It is an amenable number.

13153809 is a deficient number, since it is larger than the sum of its proper divisors (4384607).

13153809 is an equidigital number, since it uses as much as digits as its factorization.

13153809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4384606.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 13153809 is about 3626.8180268660. The cubic root of 13153809 is about 236.0571596202.

The spelling of 13153809 in words is "thirteen million, one hundred fifty-three thousand, eight hundred nine".