445887 has 24 divisors (see below), whose sum is σ = 719264. Its totient is φ = 264384.

The previous prime is 445883. The next prime is 445891. The reversal of 445887 is 788544.

It is an interprime number because it is at equal distance from previous prime (445883) and next prime (445891).

It is not a de Polignac number, because 445887 - 2² = 445883 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 445887.

It is not an unprimeable number, because it can be changed into a prime (445883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4278 + ... + 4380.

2⁴⁴⁵⁸⁸⁷ is an apocalyptic number.

445887 is a deficient number, since it is larger than the sum of its proper divisors (273377).

445887 is a wasteful number, since it uses less digits than its factorization.

445887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 156 counting only the distinct ones).

The product of its digits is 35840, while the sum is 36.

The square root of 445887 is about 667.7477068474. The cubic root of 445887 is about 76.3967593629.

The spelling of 445887 in words is "four hundred forty-five thousand, eight hundred eighty-seven".