1113209 has 4 divisors (see below), whose sum is σ = 1128960. Its totient is φ = 1097460.

The previous prime is 1113199. The next prime is 1113221. The reversal of 1113209 is 9023111.

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.

It is a cyclic number.

It is not a de Polignac number, because 1113209 - 2⁴ = 1113193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7769 + ... + 7910.

It is an arithmetic number, because the mean of its divisors is an integer number (282240).

2^1113209 is an apocalyptic number.

It is an amenable number.

1113209 is a deficient number, since it is larger than the sum of its proper divisors (15751).

1113209 is an equidigital number, since it uses as much as digits as its factorization.

1113209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15750.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 1113209 is about 1055.0872001877. The cubic root of 1113209 is about 103.6395621675.

The spelling of 1113209 in words is "one million, one hundred thirteen thousand, two hundred nine".