11995289 has 16 divisors (see below), whose sum is σ = 13169280. Its totient is φ = 10886400.

The previous prime is 11995279. The next prime is 11995303. The reversal of 11995289 is 98259911.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11995289 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11995229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79364 + ... + 79514.

It is an arithmetic number, because the mean of its divisors is an integer number (823080).

Almost surely, 2^11995289 is an apocalyptic number.

11995289 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

11995289 is a deficient number, since it is larger than the sum of its proper divisors (1173991).

11995289 is a wasteful number, since it uses less digits than its factorization.

With its successor (11995290) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (320).

11995289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320.

The product of its digits is 58320, while the sum is 44.

The square root of 11995289 is about 3463.4215741085. The cubic root of 11995289 is about 228.9128848737.

The spelling of 11995289 in words is "eleven million, nine hundred ninety-five thousand, two hundred eighty-nine".