440654 has 4 divisors (see below), whose sum is σ = 660984. Its totient is φ = 220326.

The previous prime is 440653. The next prime is 440669. The reversal of 440654 is 456044.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent 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 as a sum of consecutive naturals, namely, 110162 + ... + 110165.

It is an arithmetic number, because the mean of its divisors is an integer number (165246).

2⁴⁴⁰⁶⁵⁴ is an apocalyptic number.

440654 is a deficient number, since it is larger than the sum of its proper divisors (220330).

440654 is a wasteful number, since it uses less digits than its factorization.

440654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220329.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 440654 is about 663.8177460719. The cubic root of 440654 is about 76.0967143617.

Adding to 440654 its reverse (456044), we get a palindrome (896698).

The spelling of 440654 in words is "four hundred forty thousand, six hundred fifty-four".