111040009 has 4 divisors (see below), whose sum is σ = 116884240. Its totient is φ = 105195780.

The previous prime is 111040003. The next prime is 111040031. The reversal of 111040009 is 900040111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 900040111 = 919 ⋅979369.

It is not a de Polignac number, because 111040009 - 2⁷ = 111039881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111039974 and 111040001.

It is not an unprimeable number, because it can be changed into a prime (111040003) by changing a digit.

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, 2922087 + ... + 2922124.

It is an arithmetic number, because the mean of its divisors is an integer number (29221060).

Almost surely, 2^111040009 is an apocalyptic number.

111040009 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

111040009 is a deficient number, since it is larger than the sum of its proper divisors (5844231).

111040009 is an equidigital number, since it uses as much as digits as its factorization.

111040009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5844230.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 111040009 is about 10537.5523248997. The cubic root of 111040009 is about 480.6472878982.

The spelling of 111040009 in words is "one hundred eleven million, forty thousand, nine".