2239806 has 8 divisors (see below), whose sum is σ = 4479624. Its totient is φ = 746600.

The previous prime is 2239793. The next prime is 2239807. The reversal of 2239806 is 6089322.

2239806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

2239806 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2239807) 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 3 ways as a sum of consecutive naturals, for example, 186645 + ... + 186656.

It is an arithmetic number, because the mean of its divisors is an integer number (559953).

2^2239806 is an apocalyptic number.

2239806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2239806 is a wasteful number, since it uses less digits than its factorization.

2239806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373306.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 2239806 is about 1496.5981424551. The cubic root of 2239806 is about 130.8388749957.

The spelling of 2239806 in words is "two million, two hundred thirty-nine thousand, eight hundred six".