108999000 has 256 divisors, whose sum is σ = 413337600. Its totient is φ = 26352000.

The previous prime is 108998999. The next prime is 108999041. The reversal of 108999000 is 999801.

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

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 296817 + ... + 297183.

It is an arithmetic number, because the mean of its divisors is an integer number (1614600).

Almost surely, 2^108999000 is an apocalyptic number.

108999000 is a gapful number since it is divisible by the number (10) 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 108999000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206668800).

108999000 is an abundant number, since it is smaller than the sum of its proper divisors (304338600).

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

108999000 is a wasteful number, since it uses less digits than its factorization.

108999000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 36.

The square root of 108999000 is about 10440.2586174864. The cubic root of 108999000 is about 477.6841572867.

The spelling of 108999000 in words is "one hundred eight million, nine hundred ninety-nine thousand".