440659 has 4 divisors (see below), whose sum is σ = 447304. Its totient is φ = 434016.

The previous prime is 440653. The next prime is 440669. The reversal of 440659 is 956044.

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 440659 - 2³ = 440651 is a prime.

It is a super-3 number, since 3×440659³ = 256701962211333537, which contains 333 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440651) 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 3 ways as a sum of consecutive naturals, for example, 3222 + ... + 3355.

It is an arithmetic number, because the mean of its divisors is an integer number (111826).

2⁴⁴⁰⁶⁵⁹ is an apocalyptic number.

440659 is a deficient number, since it is larger than the sum of its proper divisors (6645).

440659 is an equidigital number, since it uses as much as digits as its factorization.

440659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6644.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 440659 is about 663.8215121552. The cubic root of 440659 is about 76.0970021779.

It can be divided in two parts, 4406 and 59, that added together give a triangular number (4465 = T₉₄).

The spelling of 440659 in words is "four hundred forty thousand, six hundred fifty-nine".