214989 has 4 divisors (see below), whose sum is σ = 286656. Its totient is φ = 143324.

The previous prime is 214987. The next prime is 214993. The reversal of 214989 is 989412.

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 214989 - 2¹ = 214987 is a prime.

It is a D-number.

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

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 (214987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35829 + ... + 35834.

It is an arithmetic number, because the mean of its divisors is an integer number (71664).

2²¹⁴⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

214989 is a deficient number, since it is larger than the sum of its proper divisors (71667).

214989 is an equidigital number, since it uses as much as digits as its factorization.

214989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71666.

The product of its digits is 5184, while the sum is 33.

The square root of 214989 is about 463.6690630180. The cubic root of 214989 is about 59.9062424573.

The spelling of 214989 in words is "two hundred fourteen thousand, nine hundred eighty-nine".