444520 has 16 divisors (see below), whose sum is σ = 1000260. Its totient is φ = 177792.

The previous prime is 444517. The next prime is 444523. The reversal of 444520 is 25444.

It is an interprime number because it is at equal distance from previous prime (444517) and next prime (444523).

It can be written as a sum of positive squares in 2 ways, for example, as 367236 + 77284 = 606^2 + 278^2 .

It is not an unprimeable number, because it can be changed into a prime (444523) 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, 5517 + ... + 5596.

2⁴⁴⁴⁵²⁰ is an apocalyptic number.

444520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

444520 is an abundant number, since it is smaller than the sum of its proper divisors (555740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

444520 is a wasteful number, since it uses less digits than its factorization.

444520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11124 (or 11120 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 444520 is about 666.7233309252. The cubic root of 444520 is about 76.3186070679.

Adding to 444520 its reverse (25444), we get a palindrome (469964).

It can be divided in two parts, 4445 and 20, that added together give a triangular number (4465 = T₉₄).

The spelling of 444520 in words is "four hundred forty-four thousand, five hundred twenty".