444143213 has 4 divisors (see below), whose sum is σ = 446624640. Its totient is φ = 441661788.

The previous prime is 444143137. The next prime is 444143237. The reversal of 444143213 is 312341444.

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 444143213 - 2⁸ = 444142957 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 (444143263) 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, 1240445 + ... + 1240802.

It is an arithmetic number, because the mean of its divisors is an integer number (111656160).

Almost surely, 2^444143213 is an apocalyptic number.

It is an amenable number.

444143213 is a deficient number, since it is larger than the sum of its proper divisors (2481427).

444143213 is a wasteful number, since it uses less digits than its factorization.

444143213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481426.

The product of its digits is 4608, while the sum is 26.

The square root of 444143213 is about 21074.7055258193. The cubic root of 444143213 is about 762.9703774399.

Adding to 444143213 its reverse (312341444), we get a palindrome (756484657).

The spelling of 444143213 in words is "four hundred forty-four million, one hundred forty-three thousand, two hundred thirteen".