212489 has 4 divisors (see below), whose sum is σ = 214656. Its totient is φ = 210324.

The previous prime is 212479. The next prime is 212501. The reversal of 212489 is 984212.

212489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 212489 - 2¹² = 208393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212419) 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, 929 + ... + 1134.

It is an arithmetic number, because the mean of its divisors is an integer number (53664).

2²¹²⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

212489 is a deficient number, since it is larger than the sum of its proper divisors (2167).

212489 is a wasteful number, since it uses less digits than its factorization.

212489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166.

The product of its digits is 1152, while the sum is 26.

The square root of 212489 is about 460.9652915351. The cubic root of 212489 is about 59.6731299068.

The spelling of 212489 in words is "two hundred twelve thousand, four hundred eighty-nine".