11042889 has 16 divisors (see below), whose sum is σ = 17298624. Its totient is φ = 6177600.

The previous prime is 11042887. The next prime is 11042893. The reversal of 11042889 is 98824011.

It is not a de Polignac number, because 11042889 - 2¹ = 11042887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11042887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12442 + ... + 13299.

It is an arithmetic number, because the mean of its divisors is an integer number (1081164).

Almost surely, 2^11042889 is an apocalyptic number.

It is an amenable number.

11042889 is a deficient number, since it is larger than the sum of its proper divisors (6255735).

11042889 is a wasteful number, since it uses less digits than its factorization.

11042889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25768.

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 11042889 is about 3323.0842601415. The cubic root of 11042889 is about 222.6866774877.

It can be divided in two parts, 1104 and 2889, that added together give a palindrome (3993).

The spelling of 11042889 in words is "eleven million, forty-two thousand, eight hundred eighty-nine".