2239866 has 16 divisors (see below), whose sum is σ = 4977600. Its totient is φ = 746604.

The previous prime is 2239847. The next prime is 2239883. The reversal of 2239866 is 6689322.

2239866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹¹ + 2²¹ + 3⁷ + 9⁵ + 8⁵ + 6 + 6⁶ .

It is a self number, because there is not a number n which added to its sum of digits gives 2239866.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20686 + ... + 20793.

It is an arithmetic number, because the mean of its divisors is an integer number (311100).

2^2239866 is an apocalyptic number.

2239866 is an abundant number, since it is smaller than the sum of its proper divisors (2737734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2239866 is a wasteful number, since it uses less digits than its factorization.

2239866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41490 (or 41484 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 2239866 is about 1496.6181877820. The cubic root of 2239866 is about 130.8400432907.

The spelling of 2239866 in words is "two million, two hundred thirty-nine thousand, eight hundred sixty-six".