111400993 has 8 divisors (see below), whose sum is σ = 123194016. Its totient is φ = 99885600.

The previous prime is 111400987. The next prime is 111400999. The reversal of 111400993 is 399004111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (111400987) and next prime (111400999).

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 111400993 - 2²¹ = 109303841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111400999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68563 + ... + 70168.

It is an arithmetic number, because the mean of its divisors is an integer number (15399252).

Almost surely, 2^111400993 is an apocalyptic number.

It is an amenable number.

111400993 is a deficient number, since it is larger than the sum of its proper divisors (11793023).

111400993 is a wasteful number, since it uses less digits than its factorization.

111400993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138815.

The product of its (nonzero) digits is 972, while the sum is 28.

The square root of 111400993 is about 10554.6668824743. Note that the first 3 decimals coincide. The cubic root of 111400993 is about 481.1675757417.

It can be divided in two parts, 111 and 400993, that added together give a palindrome (401104).

The spelling of 111400993 in words is "one hundred eleven million, four hundred thousand, nine hundred ninety-three".