440690 has 16 divisors (see below), whose sum is σ = 801792. Its totient is φ = 174384.

The previous prime is 440683. The next prime is 440711. The reversal of 440690 is 96044.

It is a super-2 number, since 2×440690² = 388415352200, which contains 22 as substring.

It is an unprimeable number.

440690 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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, 1097 + ... + 1443.

It is an arithmetic number, because the mean of its divisors is an integer number (50112).

2⁴⁴⁰⁶⁹⁰ is an apocalyptic number.

440690 is a deficient number, since it is larger than the sum of its proper divisors (361102).

440690 is a wasteful number, since it uses less digits than its factorization.

440690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481.

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

The square root of 440690 is about 663.8448613946. The cubic root of 440690 is about 76.0987865900.

The spelling of 440690 in words is "four hundred forty thousand, six hundred ninety".