444630 has 16 divisors (see below), whose sum is σ = 1067184. Its totient is φ = 118560.

The previous prime is 444623. The next prime is 444637. The reversal of 444630 is 36444.

It is an interprime number because it is at equal distance from previous prime (444623) and next prime (444637).

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 444597 and 444606.

It is a congruent number.

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

444630 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 7 ways as a sum of consecutive naturals, for example, 7381 + ... + 7440.

It is an arithmetic number, because the mean of its divisors is an integer number (66699).

2⁴⁴⁴⁶³⁰ is an apocalyptic number.

444630 is an abundant number, since it is smaller than the sum of its proper divisors (622554).

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

444630 is a wasteful number, since it uses less digits than its factorization.

444630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14831.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 444630 is about 666.8058188108. The cubic root of 444630 is about 76.3249017636.

The spelling of 444630 in words is "four hundred forty-four thousand, six hundred thirty".