111398085 has 40 divisors (see below), whose sum is σ = 208391040. Its totient is φ = 56824416.

The previous prime is 111398069. The next prime is 111398087. The reversal of 111398085 is 580893111.

It is not a de Polignac number, because 111398085 - 2⁴ = 111398069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111398087) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3336 + ... + 15294.

It is an arithmetic number, because the mean of its divisors is an integer number (5209776).

Almost surely, 2^111398085 is an apocalyptic number.

111398085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111398085 is a deficient number, since it is larger than the sum of its proper divisors (96992955).

111398085 is a wasteful number, since it uses less digits than its factorization.

111398085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11999 (or 11990 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 36.

The square root of 111398085 is about 10554.5291226089. The cubic root of 111398085 is about 481.1633889224.

The spelling of 111398085 in words is "one hundred eleven million, three hundred ninety-eight thousand, eighty-five".