11613909 has 4 divisors (see below), whose sum is σ = 15485216. Its totient is φ = 7742604.

The previous prime is 11613803. The next prime is 11613911. The reversal of 11613909 is 90931611.

11613909 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 11613909 - 2¹² = 11609813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11613409) 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, 1935649 + ... + 1935654.

It is an arithmetic number, because the mean of its divisors is an integer number (3871304).

Almost surely, 2^11613909 is an apocalyptic number.

It is an amenable number.

11613909 is a deficient number, since it is larger than the sum of its proper divisors (3871307).

11613909 is an equidigital number, since it uses as much as digits as its factorization.

11613909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3871306.

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 11613909 is about 3407.9185729709. The cubic root of 11613909 is about 226.4606795965.

The spelling of 11613909 in words is "eleven million, six hundred thirteen thousand, nine hundred nine".