840444966 has 12 divisors (see below), whose sum is σ = 1820964132. Its totient is φ = 280148316.

The previous prime is 840444959. The next prime is 840444967. The reversal of 840444966 is 669444048.

It is a super-3 number, since 3×840444966³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840444967) 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 in 5 ways as a sum of consecutive naturals, for example, 23345676 + ... + 23345711.

It is an arithmetic number, because the mean of its divisors is an integer number (151747011).

Almost surely, 2^840444966 is an apocalyptic number.

840444966 is an abundant number, since it is smaller than the sum of its proper divisors (980519166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

840444966 is a wasteful number, since it uses less digits than its factorization.

840444966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46691395 (or 46691392 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The square root of 840444966 is about 28990.4288688526. The cubic root of 840444966 is about 943.7053708937.

The spelling of 840444966 in words is "eight hundred forty million, four hundred forty-four thousand, nine hundred sixty-six".