14921409 has 8 divisors (see below), whose sum is σ = 19999072. Its totient is φ = 9895680.

The previous prime is 14921383. The next prime is 14921429. The reversal of 14921409 is 90412941.

14921409 is nontrivially palindromic in base 11.

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

It is not a de Polignac number, because 14921409 - 2⁷ = 14921281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (14921429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12307 + ... + 13464.

It is an arithmetic number, because the mean of its divisors is an integer number (2499884).

Almost surely, 2^14921409 is an apocalyptic number.

It is an amenable number.

14921409 is a deficient number, since it is larger than the sum of its proper divisors (5077663).

14921409 is a wasteful number, since it uses less digits than its factorization.

14921409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25967.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 14921409 is about 3862.8239669962. The cubic root of 14921409 is about 246.1897372871.

The spelling of 14921409 in words is "fourteen million, nine hundred twenty-one thousand, four hundred nine".