11409199 has 4 divisors (see below), whose sum is σ = 11416464. Its totient is φ = 11401936.

The previous prime is 11409197. The next prime is 11409217. The reversal of 11409199 is 99190411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11409199 - 2¹ = 11409197 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 (11409191) 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, 187 + ... + 4780.

It is an arithmetic number, because the mean of its divisors is an integer number (2854116).

Almost surely, 2^11409199 is an apocalyptic number.

11409199 is a deficient number, since it is larger than the sum of its proper divisors (7265).

11409199 is an equidigital number, since it uses as much as digits as its factorization.

11409199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7264.

The product of its (nonzero) digits is 2916, while the sum is 34.

The square root of 11409199 is about 3377.7505828584. The cubic root of 11409199 is about 225.1222315279.

The spelling of 11409199 in words is "eleven million, four hundred nine thousand, one hundred ninety-nine".