14021009 has 4 divisors (see below), whose sum is σ = 14218560. Its totient is φ = 13823460.

The previous prime is 14021003. The next prime is 14021011. The reversal of 14021009 is 90012041.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14021009 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 (14021003) 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 3 ways as a sum of consecutive naturals, for example, 98669 + ... + 98810.

It is an arithmetic number, because the mean of its divisors is an integer number (3554640).

Almost surely, 2^14021009 is an apocalyptic number.

It is an amenable number.

14021009 is a deficient number, since it is larger than the sum of its proper divisors (197551).

14021009 is an equidigital number, since it uses as much as digits as its factorization.

14021009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197550.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 14021009 is about 3744.4637800358. The cubic root of 14021009 is about 241.1347249216.

The spelling of 14021009 in words is "fourteen million, twenty-one thousand, nine".