109641090 has 32 divisors (see below), whose sum is σ = 283381056. Its totient is φ = 26988480.

The previous prime is 109641089. The next prime is 109641121. The reversal of 109641090 is 90146901.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140176 + ... + 140955.

It is an arithmetic number, because the mean of its divisors is an integer number (8855658).

Almost surely, 2^109641090 is an apocalyptic number.

109641090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

109641090 is an abundant number, since it is smaller than the sum of its proper divisors (173739966).

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

109641090 is a wasteful number, since it uses less digits than its factorization.

109641090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281154.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 109641090 is about 10470.9641389893. The cubic root of 109641090 is about 478.6203001783.

Adding to 109641090 its reverse (90146901), we get a palindrome (199787991).

The spelling of 109641090 in words is "one hundred nine million, six hundred forty-one thousand, ninety".