444890 has 16 divisors (see below), whose sum is σ = 848232. Its totient is φ = 167424.

The previous prime is 444887. The next prime is 444893. The reversal of 444890 is 98444.

It is a happy number.

It is a Cunningham number, because it is equal to 667²+1.

It is an interprime number because it is at equal distance from previous prime (444887) and next prime (444893).

It can be written as a sum of positive squares in 4 ways, for example, as 444889 + 1 = 667^2 + 1^2 .

It is a super-2 number, since 2×444890² = 395854224200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (444893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1139 + ... + 1478.

2⁴⁴⁴⁸⁹⁰ is an apocalyptic number.

444890 is a deficient number, since it is larger than the sum of its proper divisors (403342).

444890 is a wasteful number, since it uses less digits than its factorization.

444890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 444890 is about 667.0007496248. Note that the first 3 decimals coincide. The cubic root of 444890 is about 76.3397760093.

The spelling of 444890 in words is "four hundred forty-four thousand, eight hundred ninety".