84023797420 has 12 divisors (see below), whose sum is σ = 176449974624. Its totient is φ = 33609518960.

The previous prime is 84023797399. The next prime is 84023797421. The reversal of 84023797420 is 2479732048.

It is not an unprimeable number, because it can be changed into a prime (84023797421) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2100594916 + ... + 2100594955.

It is an arithmetic number, because the mean of its divisors is an integer number (14704164552).

Almost surely, 2^84023797420 is an apocalyptic number.

It is an amenable number.

84023797420 is an abundant number, since it is smaller than the sum of its proper divisors (92426177204).

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

84023797420 is a wasteful number, since it uses less digits than its factorization.

84023797420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4201189880 (or 4201189878 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 46.

The spelling of 84023797420 in words is "eighty-four billion, twenty-three million, seven hundred ninety-seven thousand, four hundred twenty".