440385 has 32 divisors (see below), whose sum is σ = 819072. Its totient is φ = 199680.

The previous prime is 440383. The next prime is 440389. The reversal of 440385 is 583044.

It is a happy number.

It is not a de Polignac number, because 440385 - 2¹ = 440383 is a prime.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (440383) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2727 + ... + 2883.

It is an arithmetic number, because the mean of its divisors is an integer number (25596).

2⁴⁴⁰³⁸⁵ is an apocalyptic number.

It is an amenable number.

440385 is a deficient number, since it is larger than the sum of its proper divisors (378687).

440385 is a wasteful number, since it uses less digits than its factorization.

440385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 440385 is about 663.6150992857. The cubic root of 440385 is about 76.0812266374.

The spelling of 440385 in words is "four hundred forty thousand, three hundred eighty-five".