445897 has 4 divisors (see below), whose sum is σ = 449536. Its totient is φ = 442260.

The previous prime is 445891. The next prime is 445931. The reversal of 445897 is 798544.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 445897 - 2⁷ = 445769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445891) 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 3 ways as a sum of consecutive naturals, for example, 1629 + ... + 1882.

It is an arithmetic number, because the mean of its divisors is an integer number (112384).

2⁴⁴⁵⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

445897 is a deficient number, since it is larger than the sum of its proper divisors (3639).

445897 is a wasteful number, since it uses less digits than its factorization.

445897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3638.

The product of its digits is 40320, while the sum is 37.

The square root of 445897 is about 667.7551946634. The cubic root of 445897 is about 76.3973304806.

The spelling of 445897 in words is "four hundred forty-five thousand, eight hundred ninety-seven".