11838909 has 8 divisors (see below), whose sum is σ = 15877152. Its totient is φ = 7846640.

The previous prime is 11838907. The next prime is 11838929. The reversal of 11838909 is 90983811.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11838909 - 2¹ = 11838907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11838901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10887 + ... + 11924.

It is an arithmetic number, because the mean of its divisors is an integer number (1984644).

Almost surely, 2^11838909 is an apocalyptic number.

It is an amenable number.

11838909 is a deficient number, since it is larger than the sum of its proper divisors (4038243).

11838909 is a wasteful number, since it uses less digits than its factorization.

11838909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22987.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 11838909 is about 3440.7715704475. The cubic root of 11838909 is about 227.9137677902.

The spelling of 11838909 in words is "eleven million, eight hundred thirty-eight thousand, nine hundred nine".