444690 has 56 divisors (see below), whose sum is σ = 1219788. Its totient is φ = 116640.

The previous prime is 444677. The next prime is 444701. The reversal of 444690 is 96444.

It can be written as a sum of positive squares in 2 ways, for example, as 385641 + 59049 = 621^2 + 243^2 .

It is a super-2 number, since 2×444690² = 395498392200, which contains 22 as substring.

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

It is an unprimeable number.

444690 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 27 ways as a sum of consecutive naturals, for example, 7260 + ... + 7320.

2⁴⁴⁴⁶⁹⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 444690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (609894).

444690 is an abundant number, since it is smaller than the sum of its proper divisors (775098).

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

444690 is an equidigital number, since it uses as much as digits as its factorization.

444690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 444690 is about 666.8508079023. The cubic root of 444690 is about 76.3283347964.

The spelling of 444690 in words is "four hundred forty-four thousand, six hundred ninety".