111390993 has 24 divisors (see below), whose sum is σ = 185522688. Its totient is φ = 63084672.

The previous prime is 111390991. The next prime is 111391031. The reversal of 111390993 is 399093111.

It is not a de Polignac number, because 111390993 - 2¹ = 111390991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111390991) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 705 + ... + 14942.

It is an arithmetic number, because the mean of its divisors is an integer number (7730112).

Almost surely, 2^111390993 is an apocalyptic number.

It is an amenable number.

111390993 is a deficient number, since it is larger than the sum of its proper divisors (74131695).

111390993 is a wasteful number, since it uses less digits than its factorization.

111390993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15773 (or 15770 counting only the distinct ones).

The product of its (nonzero) digits is 6561, while the sum is 36.

The square root of 111390993 is about 10554.1931477494. The cubic root of 111390993 is about 481.1531778457.

The spelling of 111390993 in words is "one hundred eleven million, three hundred ninety thousand, nine hundred ninety-three".