989340408 has 96 divisors (see below), whose sum is σ = 3066991200. Its totient is φ = 282230784.

The previous prime is 989340397. The next prime is 989340413. The reversal of 989340408 is 804043989.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 467160 + ... + 469272.

It is an arithmetic number, because the mean of its divisors is an integer number (31947825).

Almost surely, 2^989340408 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 989340408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1533495600).

989340408 is an abundant number, since it is smaller than the sum of its proper divisors (2077650792).

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

989340408 is a wasteful number, since it uses less digits than its factorization.

989340408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3061 (or 3054 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 989340408 is about 31453.7820937324. The cubic root of 989340408 is about 996.4341021534.

The spelling of 989340408 in words is "nine hundred eighty-nine million, three hundred forty thousand, four hundred eight".