111448909 has 12 divisors (see below), whose sum is σ = 131654592. Its totient is φ = 93522000.

The previous prime is 111448879. The next prime is 111448951. The reversal of 111448909 is 909844111.

It is not a de Polignac number, because 111448909 - 2¹⁵ = 111416141 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 (111448979) 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 11 ways as a sum of consecutive naturals, for example, 28117 + ... + 31834.

It is an arithmetic number, because the mean of its divisors is an integer number (10971216).

Almost surely, 2^111448909 is an apocalyptic number.

It is an amenable number.

111448909 is a deficient number, since it is larger than the sum of its proper divisors (20205683).

111448909 is a wasteful number, since it uses less digits than its factorization.

111448909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59988 (or 59975 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 111448909 is about 10556.9365348097. The cubic root of 111448909 is about 481.2365527473.

The spelling of 111448909 in words is "one hundred eleven million, four hundred forty-eight thousand, nine hundred nine".