11989529 has 8 divisors (see below), whose sum is σ = 12418560. Its totient is φ = 11563200.

The previous prime is 11989519. The next prime is 11989531. The reversal of 11989529 is 92598911.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11989529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11989529.

It is not an unprimeable number, because it can be changed into a prime (11989519) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 13169 + ... + 14049.

It is an arithmetic number, because the mean of its divisors is an integer number (1552320).

Almost surely, 2^11989529 is an apocalyptic number.

It is an amenable number.

11989529 is a deficient number, since it is larger than the sum of its proper divisors (429031).

11989529 is an equidigital number, since it uses as much as digits as its factorization.

11989529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1351.

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

The square root of 11989529 is about 3462.5899266301. The cubic root of 11989529 is about 228.8762385614.

The spelling of 11989529 in words is "eleven million, nine hundred eighty-nine thousand, five hundred twenty-nine".