214659989 has 4 divisors (see below), whose sum is σ = 223993056. Its totient is φ = 205326924.

The previous prime is 214659983. The next prime is 214659997. The reversal of 214659989 is 989956412.

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-214659989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 214659989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214659983) 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, 4666499 + ... + 4666544.

It is an arithmetic number, because the mean of its divisors is an integer number (55998264).

Almost surely, 2^214659989 is an apocalyptic number.

It is an amenable number.

214659989 is a deficient number, since it is larger than the sum of its proper divisors (9333067).

214659989 is an equidigital number, since it uses as much as digits as its factorization.

214659989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9333066.

The product of its digits is 1399680, while the sum is 53.

The square root of 214659989 is about 14651.2794321861. The cubic root of 214659989 is about 598.7566744229.

The spelling of 214659989 in words is "two hundred fourteen million, six hundred fifty-nine thousand, nine hundred eighty-nine".