445923 has 6 divisors (see below), whose sum is σ = 644124. Its totient is φ = 297276.

The previous prime is 445891. The next prime is 445931. The reversal of 445923 is 329544.

It is not a de Polignac number, because 445923 - 2⁵ = 445891 is a prime.

It is a d-powerful number, because it can be written as 4³ + 4⁹ + 9⁴ + 5 + 2 + 3¹¹ .

It is not an unprimeable number, because it can be changed into a prime (445943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24765 + ... + 24782.

It is an arithmetic number, because the mean of its divisors is an integer number (107354).

2⁴⁴⁵⁹²³ is an apocalyptic number.

445923 is a deficient number, since it is larger than the sum of its proper divisors (198201).

445923 is a wasteful number, since it uses less digits than its factorization.

445923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49553 (or 49550 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 445923 is about 667.7746625921. The cubic root of 445923 is about 76.3988153467.

The spelling of 445923 in words is "four hundred forty-five thousand, nine hundred twenty-three".