989646255 has 120 divisors (see below), whose sum is σ = 2024755920. Its totient is φ = 460961280.

The previous prime is 989646191. The next prime is 989646341. The reversal of 989646255 is 552646989.

It is a happy number.

989646255 is a `hidden beast` number, since 9 + 8 + 9 + 6 + 4 + 625 + 5 = 666.

It is not a de Polignac number, because 989646255 - 2⁶ = 989646191 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1300075 + ... + 1300835.

It is an arithmetic number, because the mean of its divisors is an integer number (16872966).

Almost surely, 2^989646255 is an apocalyptic number.

989646255 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

989646255 is an abundant number, since it is smaller than the sum of its proper divisors (1035109665).

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

989646255 is a wasteful number, since it uses less digits than its factorization.

989646255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823 (or 801 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The square root of 989646255 is about 31458.6435657992. The cubic root of 989646255 is about 996.5367715614.

The spelling of 989646255 in words is "nine hundred eighty-nine million, six hundred forty-six thousand, two hundred fifty-five".