445986 has 20 divisors (see below), whose sum is σ = 999702. Its totient is φ = 148608.

The previous prime is 445969. The next prime is 446003. The reversal of 445986 is 689544.

445986 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (445969) and next prime (446003).

It can be written as a sum of positive squares in only one way, i.e., 281961 + 164025 = 531^2 + 405^2 .

It is a d-powerful number, because it can be written as 4 + 4⁹ + 9⁵ + 5⁷ + 8 + 6⁶ .

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 445986.

It is a congruent number.

It is an unprimeable number.

445986 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 9 ways as a sum of consecutive naturals, for example, 1215 + ... + 1538.

2⁴⁴⁵⁹⁸⁶ is an apocalyptic number.

445986 is an abundant number, since it is smaller than the sum of its proper divisors (553716).

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

445986 is a wasteful number, since it uses less digits than its factorization.

445986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2767 (or 2758 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 445986 is about 667.8218325272. The cubic root of 445986 is about 76.4024130521.

It can be divided in two parts, 445 and 986, that added together give a triangular number (1431 = T₅₃).

The spelling of 445986 in words is "four hundred forty-five thousand, nine hundred eighty-six".