989408 has 36 divisors (see below), whose sum is σ = 2269512. Its totient is φ = 423360.

The previous prime is 989381. The next prime is 989411. The reversal of 989408 is 804989.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1253 + ... + 1883.

It is an arithmetic number, because the mean of its divisors is an integer number (63042).

2⁹⁸⁹⁴⁰⁸ is an apocalyptic number.

989408 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1134756).

989408 is an abundant number, since it is smaller than the sum of its proper divisors (1280104).

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

989408 is a wasteful number, since it uses less digits than its factorization.

989408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 989408 is about 994.6899014266. The cubic root of 989408 is about 99.6456793851.

The spelling of 989408 in words is "nine hundred eighty-nine thousand, four hundred eight".