212000989 has 4 divisors (see below), whose sum is σ = 213270624. Its totient is φ = 210731356.

The previous prime is 212000963. The next prime is 212001001. The reversal of 212000989 is 989000212.

212000989 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 212000989 - 2¹⁹ = 211476701 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 212000989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212000939) 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, 634567 + ... + 634900.

It is an arithmetic number, because the mean of its divisors is an integer number (53317656).

Almost surely, 2^212000989 is an apocalyptic number.

It is an amenable number.

212000989 is a deficient number, since it is larger than the sum of its proper divisors (1269635).

212000989 is a wasteful number, since it uses less digits than its factorization.

212000989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269634.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 212000989 is about 14560.2537409209. The cubic root of 212000989 is about 596.2741229965.

The spelling of 212000989 in words is "two hundred twelve million, nine hundred eighty-nine", and thus it is an aban number.