2205943 has 12 divisors (see below), whose sum is σ = 2376088. Its totient is φ = 2046240.

The previous prime is 2205911. The next prime is 2205947. The reversal of 2205943 is 3495022.

It is a happy number.

It is not a de Polignac number, because 2205943 - 2⁵ = 2205911 is a prime.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 2 + 2¹¹ + 0 + 5⁷ + 9⁶ + 4 + 3¹³ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205947) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36133 + ... + 36193.

2^2205943 is an apocalyptic number.

2205943 is a deficient number, since it is larger than the sum of its proper divisors (170145).

2205943 is an equidigital number, since it uses as much as digits as its factorization.

2205943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 2205943 is about 1485.2417311670. The cubic root of 2205943 is about 130.1761517368.

The spelling of 2205943 in words is "two million, two hundred five thousand, nine hundred forty-three".