445899 has 4 divisors (see below), whose sum is σ = 594536. Its totient is φ = 297264.

The previous prime is 445891. The next prime is 445931. The reversal of 445899 is 998544.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 445899 - 2³ = 445891 is a prime.

It is a D-number.

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 (445891) 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, 74314 + ... + 74319.

It is an arithmetic number, because the mean of its divisors is an integer number (148634).

2⁴⁴⁵⁸⁹⁹ is an apocalyptic number.

445899 is a deficient number, since it is larger than the sum of its proper divisors (148637).

445899 is a wasteful number, since it uses less digits than its factorization.

445899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148636.

The product of its digits is 51840, while the sum is 39.

The square root of 445899 is about 667.7566922166. The cubic root of 445899 is about 76.3974447031.

The spelling of 445899 in words is "four hundred forty-five thousand, eight hundred ninety-nine".