989490 has 16 divisors (see below), whose sum is σ = 2374848. Its totient is φ = 263856.

The previous prime is 989479. The next prime is 989507. The reversal of 989490 is 94989.

989490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16462 + ... + 16521.

It is an arithmetic number, because the mean of its divisors is an integer number (148428).

2⁹⁸⁹⁴⁹⁰ is an apocalyptic number.

989490 is an abundant number, since it is smaller than the sum of its proper divisors (1385358).

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

989490 is a wasteful number, since it uses less digits than its factorization.

989490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32993.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 989490 is about 994.7311194489. The cubic root of 989490 is about 99.6484321154.

The spelling of 989490 in words is "nine hundred eighty-nine thousand, four hundred ninety".