440613 has 8 divisors (see below), whose sum is σ = 652800. Its totient is φ = 293724.

The previous prime is 440581. The next prime is 440641. The reversal of 440613 is 316044.

It is not a de Polignac number, because 440613 - 2⁵ = 440581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8133 + ... + 8186.

It is an arithmetic number, because the mean of its divisors is an integer number (81600).

2⁴⁴⁰⁶¹³ is an apocalyptic number.

It is an amenable number.

440613 is a deficient number, since it is larger than the sum of its proper divisors (212187).

440613 is a wasteful number, since it uses less digits than its factorization.

440613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16328 (or 16322 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 440613 is about 663.7868633831. The cubic root of 440613 is about 76.0943541864.

Adding to 440613 its reverse (316044), we get a palindrome (756657).

The spelling of 440613 in words is "four hundred forty thousand, six hundred thirteen".