404441213 has 16 divisors (see below), whose sum is σ = 445627392. Its totient is φ = 364014000.

The previous prime is 404441207. The next prime is 404441267. The reversal of 404441213 is 312144404.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 404441213 - 2¹⁰ = 404440189 is a prime.

It is a super-2 number, since 2×404441213² = 327145389545822738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404441113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 628670 + ... + 629312.

It is an arithmetic number, because the mean of its divisors is an integer number (27851712).

Almost surely, 2^404441213 is an apocalyptic number.

It is an amenable number.

404441213 is a deficient number, since it is larger than the sum of its proper divisors (41186179).

404441213 is a wasteful number, since it uses less digits than its factorization.

404441213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 404441213 is about 20110.7238308321. The cubic root of 404441213 is about 739.5231972313.

Adding to 404441213 its reverse (312144404), we get a palindrome (716585617).

The spelling of 404441213 in words is "four hundred four million, four hundred forty-one thousand, two hundred thirteen".