445039 has 4 divisors (see below), whose sum is σ = 508624. Its totient is φ = 381456.

The previous prime is 445033. The next prime is 445069. The reversal of 445039 is 930544.

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

It is a cyclic number.

It is not a de Polignac number, because 445039 - 2³ = 445031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445031) 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, 31782 + ... + 31795.

It is an arithmetic number, because the mean of its divisors is an integer number (127156).

2⁴⁴⁵⁰³⁹ is an apocalyptic number.

445039 is a deficient number, since it is larger than the sum of its proper divisors (63585).

445039 is an equidigital number, since it uses as much as digits as its factorization.

445039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63584.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 445039 is about 667.1124343017. The cubic root of 445039 is about 76.3482974843.

It can be divided in two parts, 4450 and 39, that added together give a square (4489 = 67²).

The spelling of 445039 in words is "four hundred forty-five thousand, thirty-nine".