13801609 has 4 divisors (see below), whose sum is σ = 13930704. Its totient is φ = 13672516.

The previous prime is 13801607. The next prime is 13801621. The reversal of 13801609 is 90610831.

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 a cyclic number.

It is not a de Polignac number, because 13801609 - 2¹ = 13801607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13801607) 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, 64387 + ... + 64600.

It is an arithmetic number, because the mean of its divisors is an integer number (3482676).

Almost surely, 2^13801609 is an apocalyptic number.

It is an amenable number.

13801609 is a deficient number, since it is larger than the sum of its proper divisors (129095).

13801609 is a wasteful number, since it uses less digits than its factorization.

13801609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129094.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 13801609 is about 3715.0516820093. The cubic root of 13801609 is about 239.8703524309.

The spelling of 13801609 in words is "thirteen million, eight hundred one thousand, six hundred nine".