84008021844 has 24 divisors (see below), whose sum is σ = 196029531040. Its totient is φ = 28001129184.

The previous prime is 84008021833. The next prime is 84008021897. The reversal of 84008021844 is 44812080048.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 45267 + ... + 412389.

Almost surely, 2^84008021844 is an apocalyptic number.

It is an amenable number.

84008021844 is an abundant number, since it is smaller than the sum of its proper divisors (112021509196).

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

84008021844 is a wasteful number, since it uses less digits than its factorization.

84008021844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386199 (or 386197 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 39.

The spelling of 84008021844 in words is "eighty-four billion, eight million, twenty-one thousand, eight hundred forty-four".