40002205 has 4 divisors (see below), whose sum is σ = 48002652. Its totient is φ = 32001760.

The previous prime is 40002199. The next prime is 40002233. The reversal of 40002205 is 50220004.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24344356 + 15657849 = 4934^2 + 3957^2 .

It is not a de Polignac number, because 40002205 - 2³ = 40002197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4000216 + ... + 4000225.

It is an arithmetic number, because the mean of its divisors is an integer number (12000663).

Almost surely, 2^40002205 is an apocalyptic number.

It is an amenable number.

40002205 is a deficient number, since it is larger than the sum of its proper divisors (8000447).

40002205 is an equidigital number, since it uses as much as digits as its factorization.

40002205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8000446.

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 40002205 is about 6324.7296384905. The cubic root of 40002205 is about 342.0014733815.

Adding to 40002205 its reverse (50220004), we get a palindrome (90222209).

The spelling of 40002205 in words is "forty million, two thousand, two hundred five".