109090000 has 50 divisors (see below), whose sum is σ = 264142010. Its totient is φ = 43632000.

The previous prime is 109089977. The next prime is 109090019. The reversal of 109090000 is 90901.

It can be written as a sum of positive squares in 5 ways, for example, as 57881664 + 51208336 = 7608^2 + 7156^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is a self number, because there is not a number n which added to its sum of digits gives 109090000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4546 + ... + 15454.

Almost surely, 2^109090000 is an apocalyptic number.

109090000 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 109090000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132071005).

109090000 is an abundant number, since it is smaller than the sum of its proper divisors (155052010).

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

109090000 is an equidigital number, since it uses as much as digits as its factorization.

109090000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10937 (or 10916 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 19.

The square root of 109090000 is about 10444.6158378372. The cubic root of 109090000 is about 477.8170550407.

The spelling of 109090000 in words is "one hundred nine million, ninety thousand".