14155409 has 4 divisors (see below), whose sum is σ = 14242416. Its totient is φ = 14068404.

The previous prime is 14155403. The next prime is 14155411. The reversal of 14155409 is 90455141.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90455141 = 7 ⋅12922163.

It is a cyclic number.

It is not a de Polignac number, because 14155409 - 2⁸ = 14155153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14155403) 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, 43259 + ... + 43584.

It is an arithmetic number, because the mean of its divisors is an integer number (3560604).

Almost surely, 2^14155409 is an apocalyptic number.

It is an amenable number.

14155409 is a deficient number, since it is larger than the sum of its proper divisors (87007).

14155409 is an equidigital number, since it uses as much as digits as its factorization.

14155409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87006.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 14155409 is about 3762.3674727490. The cubic root of 14155409 is about 241.9027510352.

The spelling of 14155409 in words is "fourteen million, one hundred fifty-five thousand, four hundred nine".