14212009 has 6 divisors (see below), whose sum is σ = 16532394. Its totient is φ = 12181680.

The previous prime is 14211997. The next prime is 14212031. The reversal of 14212009 is 90021241.

14212009 = T₇₃₇ + T₇₃₈ + ... + T₇₈₅.

It can be written as a sum of positive squares in only one way, i.e., 7683984 + 6528025 = 2772^2 + 2555^2 .

It is not a de Polignac number, because 14212009 - 2⁹ = 14211497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14212049) 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, 144972 + ... + 145069.

It is an arithmetic number, because the mean of its divisors is an integer number (2755399).

Almost surely, 2^14212009 is an apocalyptic number.

It is an amenable number.

14212009 is a deficient number, since it is larger than the sum of its proper divisors (2320385).

14212009 is an equidigital number, since it uses as much as digits as its factorization.

14212009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290055 (or 290048 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 14212009 is about 3769.8818283867. The cubic root of 14212009 is about 242.2247360215.

The spelling of 14212009 in words is "fourteen million, two hundred twelve thousand, nine".