444535213 has 4 divisors (see below), whose sum is σ = 446265180. Its totient is φ = 442805248.

The previous prime is 444535211. The next prime is 444535219. The reversal of 444535213 is 312535444.

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 441756324 + 2778889 = 21018^2 + 1667^2 .

It is a cyclic number.

It is not a de Polignac number, because 444535213 - 2¹ = 444535211 is a prime.

It is a super-2 number, since 2×444535213² = 395223111193910738, 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 (444535211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 864598 + ... + 865111.

It is an arithmetic number, because the mean of its divisors is an integer number (111566295).

Almost surely, 2^444535213 is an apocalyptic number.

It is an amenable number.

444535213 is a deficient number, since it is larger than the sum of its proper divisors (1729967).

444535213 is a wasteful number, since it uses less digits than its factorization.

444535213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1729966.

The product of its digits is 28800, while the sum is 31.

The square root of 444535213 is about 21084.0037232021. The cubic root of 444535213 is about 763.1947768617.

The spelling of 444535213 in words is "four hundred forty-four million, five hundred thirty-five thousand, two hundred thirteen".