1113709409 has 4 divisors (see below), whose sum is σ = 1121085120. Its totient is φ = 1106333700.

The previous prime is 1113709403. The next prime is 1113709451. The reversal of 1113709409 is 9049073111.

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: 9049073111 = 13 ⋅696082547.

It is a cyclic number.

It is not a de Polignac number, because 1113709409 - 2²⁰ = 1112660833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1113709403) 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, 3687629 + ... + 3687930.

It is an arithmetic number, because the mean of its divisors is an integer number (280271280).

Almost surely, 2^1113709409 is an apocalyptic number.

It is an amenable number.

1113709409 is a deficient number, since it is larger than the sum of its proper divisors (7375711).

1113709409 is an equidigital number, since it uses as much as digits as its factorization.

1113709409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7375710.

The product of its (nonzero) digits is 6804, while the sum is 35.

The square root of 1113709409 is about 33372.2850431312. The cubic root of 1113709409 is about 1036.5508917117.

The spelling of 1113709409 in words is "one billion, one hundred thirteen million, seven hundred nine thousand, four hundred nine".