840440088408 has 32 divisors (see below), whose sum is σ = 2157886715760. Its totient is φ = 272575163520.

The previous prime is 840440088347. The next prime is 840440088413. The reversal of 840440088408 is 804880044048.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473219883 + ... + 473221658.

Almost surely, 2^840440088408 is an apocalyptic number.

It is an amenable number.

840440088408 is an abundant number, since it is smaller than the sum of its proper divisors (1317446627352).

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

840440088408 is a wasteful number, since it uses less digits than its factorization.

840440088408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946441587 (or 946441583 counting only the distinct ones).

The product of its (nonzero) digits is 1048576, while the sum is 48.

The spelling of 840440088408 in words is "eight hundred forty billion, four hundred forty million, eighty-eight thousand, four hundred eight".