11821249 has 16 divisors (see below), whose sum is σ = 13697280. Its totient is φ = 10089360.

The previous prime is 11821237. The next prime is 11821267. The reversal of 11821249 is 94212811.

It is a cyclic number.

It is not a de Polignac number, because 11821249 - 2²¹ = 9724097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11821289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33894 + ... + 34240.

It is an arithmetic number, because the mean of its divisors is an integer number (856080).

Almost surely, 2^11821249 is an apocalyptic number.

11821249 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11821249 is a deficient number, since it is larger than the sum of its proper divisors (1876031).

11821249 is a wasteful number, since it uses less digits than its factorization.

11821249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540.

The product of its digits is 1152, while the sum is 28.

The square root of 11821249 is about 3438.2043278432. The cubic root of 11821249 is about 227.8003857173.

The spelling of 11821249 in words is "eleven million, eight hundred twenty-one thousand, two hundred forty-nine".