444689 has 4 divisors (see below), whose sum is σ = 508224. Its totient is φ = 381156.

The previous prime is 444677. The next prime is 444701. The reversal of 444689 is 986444.

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 an interprime number because it is at equal distance from previous prime (444677) and next prime (444701).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-444689 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (444649) 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, 31757 + ... + 31770.

It is an arithmetic number, because the mean of its divisors is an integer number (127056).

2⁴⁴⁴⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

444689 is a deficient number, since it is larger than the sum of its proper divisors (63535).

444689 is an equidigital number, since it uses as much as digits as its factorization.

444689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63534.

The product of its digits is 27648, while the sum is 35.

The square root of 444689 is about 666.8500581090. The cubic root of 444689 is about 76.3282775817.

The spelling of 444689 in words is "four hundred forty-four thousand, six hundred eighty-nine".