440661 has 8 divisors (see below), whose sum is σ = 632800. Its totient is φ = 271152.

The previous prime is 440653. The next prime is 440669. The reversal of 440661 is 166044.

It is an interprime number because it is at equal distance from previous prime (440653) and next prime (440669).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 440661 - 2³ = 440653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440669) 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 7 ways as a sum of consecutive naturals, for example, 5611 + ... + 5688.

It is an arithmetic number, because the mean of its divisors is an integer number (79100).

2⁴⁴⁰⁶⁶¹ is an apocalyptic number.

It is an amenable number.

440661 is a deficient number, since it is larger than the sum of its proper divisors (192139).

440661 is a wasteful number, since it uses less digits than its factorization.

440661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11315.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 440661 is about 663.8230185825. The cubic root of 440661 is about 76.0971173038.

The spelling of 440661 in words is "four hundred forty thousand, six hundred sixty-one".