1989330 has 32 divisors (see below), whose sum is σ = 5457024. Its totient is φ = 454656.

The previous prime is 1989329. The next prime is 1989341. The reversal of 1989330 is 339891.

It is a junction number, because it is equal to n+sod(n) for n = 1989291 and 1989300.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4527 + ... + 4946.

It is an arithmetic number, because the mean of its divisors is an integer number (170532).

2^1989330 is an apocalyptic number.

1989330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1989330 is an abundant number, since it is smaller than the sum of its proper divisors (3467694).

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

1989330 is a wasteful number, since it uses less digits than its factorization.

1989330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9490.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 1989330 is about 1410.4361027711. The cubic root of 1989330 is about 125.7676493981.

The spelling of 1989330 in words is "one million, nine hundred eighty-nine thousand, three hundred thirty".