111447889 has 8 divisors (see below), whose sum is σ = 127433088. Its totient is φ = 95478720.

The previous prime is 111447839. The next prime is 111447893. The reversal of 111447889 is 988744111.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 111447889 - 2¹⁷ = 111316817 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (111447839) 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 7 ways as a sum of consecutive naturals, for example, 23529 + ... + 27865.

It is an arithmetic number, because the mean of its divisors is an integer number (15929136).

Almost surely, 2^111447889 is an apocalyptic number.

It is an amenable number.

111447889 is a deficient number, since it is larger than the sum of its proper divisors (15985199).

111447889 is an equidigital number, since it uses as much as digits as its factorization.

111447889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8015.

The product of its digits is 64512, while the sum is 43.

The square root of 111447889 is about 10556.8882252300. Note that the first 3 decimals coincide. The cubic root of 111447889 is about 481.2350846223.

The spelling of 111447889 in words is "one hundred eleven million, four hundred forty-seven thousand, eight hundred eighty-nine".