111380409 has 12 divisors (see below), whose sum is σ = 183866176. Its totient is φ = 63645912.

The previous prime is 111380383. The next prime is 111380417. The reversal of 111380409 is 904083111.

It is not a de Polignac number, because 111380409 - 2⁹ = 111379897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111380419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 883909 + ... + 884034.

Almost surely, 2^111380409 is an apocalyptic number.

It is an amenable number.

111380409 is a deficient number, since it is larger than the sum of its proper divisors (72485767).

111380409 is a wasteful number, since it uses less digits than its factorization.

111380409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767956 (or 1767953 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 111380409 is about 10553.6917237524. The cubic root of 111380409 is about 481.1379381738.

The spelling of 111380409 in words is "one hundred eleven million, three hundred eighty thousand, four hundred nine".