11949 has 8 divisors (see below), whose sum is σ = 18240. Its totient is φ = 6816.

The previous prime is 11941. The next prime is 11953. The reversal of 11949 is 94911.

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

It is not a de Polignac number, because 11949 - 2³ = 11941 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11941) 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, 264 + ... + 305.

It is an arithmetic number, because the mean of its divisors is an integer number (2280).

2¹¹⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

11949 is a deficient number, since it is larger than the sum of its proper divisors (6291).

11949 is an equidigital number, since it uses as much as digits as its factorization.

11949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579.

The product of its digits is 324, while the sum is 24.

The square root of 11949 is about 109.3114815561. The cubic root of 11949 is about 22.8618052245.

The spelling of 11949 in words is "eleven thousand, nine hundred forty-nine".