989456 has 40 divisors (see below), whose sum is σ = 2124864. Its totient is φ = 443520.

The previous prime is 989441. The next prime is 989467. The reversal of 989456 is 654989.

It is an Ulam number.

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

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, 13901 + ... + 13971.

2⁹⁸⁹⁴⁵⁶ 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 989456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1062432).

989456 is an abundant number, since it is smaller than the sum of its proper divisors (1135408).

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

989456 is a wasteful number, since it uses less digits than its factorization.

989456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 153 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 989456 is about 994.7140292567. The cubic root of 989456 is about 99.6472907579.

The spelling of 989456 in words is "nine hundred eighty-nine thousand, four hundred fifty-six".