438440467866 has 8 divisors (see below), whose sum is σ = 876880935744. Its totient is φ = 146146822620.

The previous prime is 438440467859. The next prime is 438440467891. The reversal of 438440467866 is 668764044834.

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

438440467866 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36536705650 + ... + 36536705661.

It is an arithmetic number, because the mean of its divisors is an integer number (109610116968).

Almost surely, 2^438440467866 is an apocalyptic number.

438440467866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

438440467866 is a wasteful number, since it uses less digits than its factorization.

438440467866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73073411316.

The product of its (nonzero) digits is 74317824, while the sum is 60.

The spelling of 438440467866 in words is "four hundred thirty-eight billion, four hundred forty million, four hundred sixty-seven thousand, eight hundred sixty-six".