989415000 has 400 divisors, whose sum is σ = 3969042000. Its totient is φ = 225504000.

The previous prime is 989414893. The next prime is 989415017. The reversal of 989415000 is 514989.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 99 ways as a sum of consecutive naturals, for example, 2834826 + ... + 2835174.

It is an arithmetic number, because the mean of its divisors is an integer number (9922605).

Almost surely, 2^989415000 is an apocalyptic number.

989415000 is a gapful number since it is divisible by the number (90) 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 989415000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1984521000).

989415000 is an abundant number, since it is smaller than the sum of its proper divisors (2979627000).

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

989415000 is a wasteful number, since it uses less digits than its factorization.

989415000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 989415000 is about 31454.9678111423. The cubic root of 989415000 is about 996.4591438021.

Adding to 989415000 its reverse (514989), we get a palindrome (989929989).

The spelling of 989415000 in words is "nine hundred eighty-nine million, four hundred fifteen thousand".