440906 has 8 divisors (see below), whose sum is σ = 669060. Its totient is φ = 217888.

The previous prime is 440903. The next prime is 440911. The reversal of 440906 is 609044.

It can be written as a sum of positive squares in 2 ways, for example, as 429025 + 11881 = 655^2 + 109^2 .

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

It is a Curzon number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (440903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061 + ... + 1416.

2⁴⁴⁰⁹⁰⁶ is an apocalyptic number.

440906 is a deficient number, since it is larger than the sum of its proper divisors (228154).

440906 is a wasteful number, since it uses less digits than its factorization.

440906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2568.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 440906 is about 664.0075300778. The cubic root of 440906 is about 76.1112175907. Note that the first 3 decimals are identical.

The spelling of 440906 in words is "four hundred forty thousand, nine hundred six".