440523 has 6 divisors (see below), whose sum is σ = 636324. Its totient is φ = 293676.

The previous prime is 440509. The next prime is 440527. The reversal of 440523 is 325044.

It is a happy number.

It is not a de Polignac number, because 440523 - 2⁴ = 440507 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 440496 and 440505.

It is not an unprimeable number, because it can be changed into a prime (440527) 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 5 ways as a sum of consecutive naturals, for example, 24465 + ... + 24482.

It is an arithmetic number, because the mean of its divisors is an integer number (106054).

2⁴⁴⁰⁵²³ is an apocalyptic number.

440523 is a deficient number, since it is larger than the sum of its proper divisors (195801).

440523 is a wasteful number, since it uses less digits than its factorization.

440523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48953 (or 48950 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 440523 is about 663.7190670758. The cubic root of 440523 is about 76.0891728003.

Adding to 440523 its reverse (325044), we get a palindrome (765567).

The spelling of 440523 in words is "four hundred forty thousand, five hundred twenty-three".