445387 has 4 divisors (see below), whose sum is σ = 448776. Its totient is φ = 442000.

The previous prime is 445363. The next prime is 445427. The reversal of 445387 is 783544.

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 445387 - 2¹⁵ = 412619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445307) 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, 1489 + ... + 1762.

It is an arithmetic number, because the mean of its divisors is an integer number (112194).

2⁴⁴⁵³⁸⁷ is an apocalyptic number.

445387 is a deficient number, since it is larger than the sum of its proper divisors (3389).

445387 is a wasteful number, since it uses less digits than its factorization.

445387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3388.

The product of its digits is 13440, while the sum is 31.

The square root of 445387 is about 667.3732089319. The cubic root of 445387 is about 76.3681925836.

The spelling of 445387 in words is "four hundred forty-five thousand, three hundred eighty-seven".