444636 has 48 divisors (see below), whose sum is σ = 1209600. Its totient is φ = 140976.

The previous prime is 444623. The next prime is 444637. The reversal of 444636 is 636444.

It is a happy number.

444636 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444637) by changing a digit.

444636 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2395 + ... + 2573.

It is an arithmetic number, because the mean of its divisors is an integer number (25200).

2⁴⁴⁴⁶³⁶ is an apocalyptic number.

444636 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 444636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (604800).

444636 is an abundant number, since it is smaller than the sum of its proper divisors (764964).

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

444636 is a wasteful number, since it uses less digits than its factorization.

444636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 207 counting only the distinct ones).

The product of its digits is 6912, while the sum is 27.

The square root of 444636 is about 666.8103178566. The cubic root of 444636 is about 76.3252450808.

The spelling of 444636 in words is "four hundred forty-four thousand, six hundred thirty-six".