440208668 has 6 divisors (see below), whose sum is σ = 770365176. Its totient is φ = 220104332.

The previous prime is 440208641. The next prime is 440208683. The reversal of 440208668 is 866802044.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55026080 + ... + 55026087.

It is an arithmetic number, because the mean of its divisors is an integer number (128394196).

Almost surely, 2^440208668 is an apocalyptic number.

It is an amenable number.

440208668 is a deficient number, since it is larger than the sum of its proper divisors (330156508).

440208668 is a wasteful number, since it uses less digits than its factorization.

440208668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110052171 (or 110052169 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 440208668 is about 20981.1503021164. The cubic root of 440208668 is about 760.7107086781.

The spelling of 440208668 in words is "four hundred forty million, two hundred eight thousand, six hundred sixty-eight".