109890111 has 8 divisors (see below), whose sum is σ = 150480304. Its totient is φ = 71280000.

The previous prime is 109890103. The next prime is 109890149. The reversal of 109890111 is 111098901.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 109890111 - 2³ = 109890103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109890101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494890 + ... + 495111.

It is an arithmetic number, because the mean of its divisors is an integer number (18810038).

Almost surely, 2^109890111 is an apocalyptic number.

109890111 is a deficient number, since it is larger than the sum of its proper divisors (40590193).

109890111 is an equidigital number, since it uses as much as digits as its factorization.

109890111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990041.

The product of its (nonzero) digits is 648, while the sum is 30.

The square root of 109890111 is about 10482.8484201576. The cubic root of 109890111 is about 478.9823797169.

The spelling of 109890111 in words is "one hundred nine million, eight hundred ninety thousand, one hundred eleven".