214909 has 4 divisors (see below), whose sum is σ = 226240. Its totient is φ = 203580.

The previous prime is 214891. The next prime is 214913. The reversal of 214909 is 909412.

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 not a de Polignac number, because 214909 - 2¹⁵ = 182141 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

214909 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214939) 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, 5637 + ... + 5674.

It is an arithmetic number, because the mean of its divisors is an integer number (56560).

2²¹⁴⁹⁰⁹ is an apocalyptic number.

It is an amenable number.

214909 is a deficient number, since it is larger than the sum of its proper divisors (11331).

214909 is a wasteful number, since it uses less digits than its factorization.

214909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11330.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 214909 is about 463.5827865657. The cubic root of 214909 is about 59.8988109236.

The spelling of 214909 in words is "two hundred fourteen thousand, nine hundred nine".