440213 has 4 divisors (see below), whose sum is σ = 443520. Its totient is φ = 436908.

The previous prime is 440207. The next prime is 440221. The reversal of 440213 is 312044.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 440213 - 2¹⁶ = 374677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1445 + ... + 1722.

It is an arithmetic number, because the mean of its divisors is an integer number (110880).

2⁴⁴⁰²¹³ is an apocalyptic number.

It is an amenable number.

440213 is a deficient number, since it is larger than the sum of its proper divisors (3307).

440213 is a wasteful number, since it uses less digits than its factorization.

440213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3306.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 440213 is about 663.4854934360. The cubic root of 440213 is about 76.0713204001.

Adding to 440213 its reverse (312044), we get a palindrome (752257).

The spelling of 440213 in words is "four hundred forty thousand, two hundred thirteen".