989655408 has 560 divisors, whose sum is σ = 3747188736. Its totient is φ = 246343680.

The previous prime is 989655349. The next prime is 989655419. The reversal of 989655408 is 804556989.

It is a happy number.

989655408 is a `hidden beast` number, since 9 + 8 + 96 + 5 + 540 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 31924353 + ... + 31924383.

Almost surely, 2^989655408 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 989655408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1873594368).

989655408 is an abundant number, since it is smaller than the sum of its proper divisors (2757533328).

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

989655408 is a wasteful number, since it uses less digits than its factorization.

989655408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The square root of 989655408 is about 31458.7890421739. The cubic root of 989655408 is about 996.5398437948.

The spelling of 989655408 in words is "nine hundred eighty-nine million, six hundred fifty-five thousand, four hundred eight".