1989222 has 8 divisors (see below), whose sum is σ = 3978456. Its totient is φ = 663072.

The previous prime is 1989217. The next prime is 1989233. The reversal of 1989222 is 2229891.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1989222 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165763 + ... + 165774.

It is an arithmetic number, because the mean of its divisors is an integer number (497307).

2^1989222 is an apocalyptic number.

1989222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1989222 is a wasteful number, since it uses less digits than its factorization.

1989222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331542.

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

The square root of 1989222 is about 1410.3978162207. The cubic root of 1989222 is about 125.7653733970.

It can be divided in two parts, 1989 and 222, that added together give a triangular number (2211 = T₆₆).

The spelling of 1989222 in words is "one million, nine hundred eighty-nine thousand, two hundred twenty-two".