404440213 has 12 divisors (see below), whose sum is σ = 427939200. Its totient is φ = 382174056.

The previous prime is 404440193. The next prime is 404440243. The reversal of 404440213 is 312044404.

It is not a de Polignac number, because 404440213 - 2⁹ = 404439701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404440243) 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, 167388 + ... + 169786.

It is an arithmetic number, because the mean of its divisors is an integer number (35661600).

Almost surely, 2^404440213 is an apocalyptic number.

It is an amenable number.

404440213 is a deficient number, since it is larger than the sum of its proper divisors (23498987).

404440213 is a wasteful number, since it uses less digits than its factorization.

404440213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2904 (or 2885 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 404440213 is about 20110.6989684595. The cubic root of 404440213 is about 739.5225877288.

Adding to 404440213 its reverse (312044404), we get a palindrome (716484617).

The spelling of 404440213 in words is "four hundred four million, four hundred forty thousand, two hundred thirteen".