14431809 has 16 divisors (see below), whose sum is σ = 22094720. Its totient is φ = 8208000.

The previous prime is 14431801. The next prime is 14431817. The reversal of 14431809 is 90813441.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (14431801) and next prime (14431817).

It is not a de Polignac number, because 14431809 - 2³ = 14431801 is a prime.

It is a super-2 number, since 2×14431809² = 416554222024962, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (14431801) 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 in 15 ways as a sum of consecutive naturals, for example, 3309 + ... + 6309.

It is an arithmetic number, because the mean of its divisors is an integer number (1380920).

Almost surely, 2^14431809 is an apocalyptic number.

It is an amenable number.

14431809 is a deficient number, since it is larger than the sum of its proper divisors (7662911).

14431809 is a wasteful number, since it uses less digits than its factorization.

14431809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3240.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 14431809 is about 3798.9220839601. The cubic root of 14431809 is about 243.4670858257.

The spelling of 14431809 in words is "fourteen million, four hundred thirty-one thousand, eight hundred nine".