440042668 has 24 divisors (see below), whose sum is σ = 849542400. Its totient is φ = 198142080.

The previous prime is 440042657. The next prime is 440042683. The reversal of 440042668 is 866240044.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101068 + ... + 105331.

It is an arithmetic number, because the mean of its divisors is an integer number (35397600).

Almost surely, 2^440042668 is an apocalyptic number.

It is an amenable number.

440042668 is a deficient number, since it is larger than the sum of its proper divisors (409499732).

440042668 is a wasteful number, since it uses less digits than its factorization.

440042668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206457 (or 206455 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 440042668 is about 20977.1939972914. The cubic root of 440042668 is about 760.6150768691.

The spelling of 440042668 in words is "four hundred forty million, forty-two thousand, six hundred sixty-eight".