111989386 has 8 divisors (see below), whose sum is σ = 168223140. Its totient is φ = 55915008.

The previous prime is 111989377. The next prime is 111989399. The reversal of 111989386 is 683989111.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 108680625 + 3308761 = 10425^2 + 1819^2 .

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

It is a super-3 number, since 3×111989386³ (a number of 25 digits) contains 333 as substring.

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 3 ways as a sum of consecutive naturals, for example, 38071 + ... + 40906.

Almost surely, 2^111989386 is an apocalyptic number.

111989386 is a deficient number, since it is larger than the sum of its proper divisors (56233754).

111989386 is an equidigital number, since it uses as much as digits as its factorization.

111989386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79688.

The product of its digits is 93312, while the sum is 46.

The square root of 111989386 is about 10582.5037680126. The cubic root of 111989386 is about 482.0132254195.

The spelling of 111989386 in words is "one hundred eleven million, nine hundred eighty-nine thousand, three hundred eighty-six".