11409838 has 32 divisors (see below), whose sum is σ = 19502208. Its totient is φ = 4960800.

The previous prime is 11409821. The next prime is 11409841. The reversal of 11409838 is 83890411.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 87033 + ... + 87163.

It is an arithmetic number, because the mean of its divisors is an integer number (609444).

Almost surely, 2^11409838 is an apocalyptic number.

11409838 is a deficient number, since it is larger than the sum of its proper divisors (8092370).

11409838 is a wasteful number, since it uses less digits than its factorization.

11409838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 11409838 is about 3377.8451711113. The cubic root of 11409838 is about 225.1264342892.

The spelling of 11409838 in words is "eleven million, four hundred nine thousand, eight hundred thirty-eight".