11441987 has 4 divisors (see below), whose sum is σ = 11555376. Its totient is φ = 11328600.

The previous prime is 11441981. The next prime is 11442019. The reversal of 11441987 is 78914411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11441987 - 2¹⁰ = 11440963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11441981) 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 3 ways as a sum of consecutive naturals, for example, 56543 + ... + 56744.

It is an arithmetic number, because the mean of its divisors is an integer number (2888844).

Almost surely, 2^11441987 is an apocalyptic number.

11441987 is a deficient number, since it is larger than the sum of its proper divisors (113389).

11441987 is a wasteful number, since it uses less digits than its factorization.

11441987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113388.

The product of its digits is 8064, while the sum is 35.

The square root of 11441987 is about 3382.6006267368. The cubic root of 11441987 is about 225.3376789677.

The spelling of 11441987 in words is "eleven million, four hundred forty-one thousand, nine hundred eighty-seven".