13144409 has 8 divisors (see below), whose sum is σ = 13944480. Its totient is φ = 12355200.

The previous prime is 13144393. The next prime is 13144423. The reversal of 13144409 is 90444131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13144409 - 2⁴ = 13144393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13144459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152 + ... + 5129.

It is an arithmetic number, because the mean of its divisors is an integer number (1743060).

Almost surely, 2^13144409 is an apocalyptic number.

13144409 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13144409 is a deficient number, since it is larger than the sum of its proper divisors (800071).

13144409 is a wasteful number, since it uses less digits than its factorization.

13144409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5431.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 13144409 is about 3625.5218934658. The cubic root of 13144409 is about 236.0009156816. Note that the first 3 decimals are identical.

The spelling of 13144409 in words is "thirteen million, one hundred forty-four thousand, four hundred nine".