2205939 has 8 divisors (see below), whose sum is σ = 2949520. Its totient is φ = 1466496.

The previous prime is 2205911. The next prime is 2205947. The reversal of 2205939 is 9395022.

2205939 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.

It is not a de Polignac number, because 2205939 - 2¹³ = 2197747 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2205949) 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 7 ways as a sum of consecutive naturals, for example, 567 + ... + 2175.

It is an arithmetic number, because the mean of its divisors is an integer number (368690).

2^2205939 is an apocalyptic number.

2205939 is a deficient number, since it is larger than the sum of its proper divisors (743581).

2205939 is a wasteful number, since it uses less digits than its factorization.

2205939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069.

The product of its (nonzero) digits is 4860, while the sum is 30.

The square root of 2205939 is about 1485.2403845843. The cubic root of 2205939 is about 130.1760730546.

The spelling of 2205939 in words is "two million, two hundred five thousand, nine hundred thirty-nine".