14357809 has 6 divisors (see below), whose sum is σ = 15252374. Its totient is φ = 13512960.

The previous prime is 14357801. The next prime is 14357821. The reversal of 14357809 is 90875341.

14357809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 7840000 + 6517809 = 2800^2 + 2553^2 .

It is not a de Polignac number, because 14357809 - 2³ = 14357801 is a prime.

It is a super-2 number, since 2×14357809² = 412293358560962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14357801) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24552 + ... + 25129.

Almost surely, 2^14357809 is an apocalyptic number.

It is an amenable number.

14357809 is a deficient number, since it is larger than the sum of its proper divisors (894565).

14357809 is an equidigital number, since it uses as much as digits as its factorization.

14357809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49715 (or 49698 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 14357809 is about 3789.1699618782. The cubic root of 14357809 is about 243.0502416621.

The spelling of 14357809 in words is "fourteen million, three hundred fifty-seven thousand, eight hundred nine".