1989208 has 32 divisors (see below), whose sum is σ = 4152960. Its totient is φ = 887040.

The previous prime is 1989203. The next prime is 1989217. The reversal of 1989208 is 8029891.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1989203) 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 7 ways as a sum of consecutive naturals, for example, 2916 + ... + 3532.

It is an arithmetic number, because the mean of its divisors is an integer number (129780).

2^1989208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1989208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2076480).

1989208 is an abundant number, since it is smaller than the sum of its proper divisors (2163752).

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

1989208 is a wasteful number, since it uses less digits than its factorization.

1989208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 663 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 1989208 is about 1410.3928530732. The cubic root of 1989208 is about 125.7650783538.

It can be divided in two parts, 1989 and 208, that added together give a cube (2197 = 13³).

The spelling of 1989208 in words is "one million, nine hundred eighty-nine thousand, two hundred eight".