111099989 has 16 divisors (see below), whose sum is σ = 149170560. Its totient is φ = 79911360.

The previous prime is 111099983. The next prime is 111099997. The reversal of 111099989 is 989990111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111099989 - 2¹² = 111095893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111099983) by changing a digit.

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, 54494 + ... + 56495.

It is an arithmetic number, because the mean of its divisors is an integer number (9323160).

Almost surely, 2^111099989 is an apocalyptic number.

It is an amenable number.

111099989 is a deficient number, since it is larger than the sum of its proper divisors (38070571).

111099989 is a wasteful number, since it uses less digits than its factorization.

111099989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111020.

The product of its (nonzero) digits is 52488, while the sum is 47.

The square root of 111099989 is about 10540.3979526392. The cubic root of 111099989 is about 480.7338153739.

The spelling of 111099989 in words is "one hundred eleven million, ninety-nine thousand, nine hundred eighty-nine".