84679994420343 has 288 divisors, whose sum is σ = 155669628321792. Its totient is φ = 43360721712000.

The previous prime is 84679994420299. The next prime is 84679994420353. The reversal of 84679994420343 is 34302449997648.

It is a happy number.

84679994420343 is a `hidden beast` number, since 8 + 4 + 6 + 79 + 9 + 94 + 420 + 3 + 43 = 666.

It is not a de Polignac number, because 84679994420343 - 2¹³ = 84679994412151 is a prime.

It is a super-2 number, since 2×84679994420343² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84679994420353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 21989090368 + ... + 21989094218.

It is an arithmetic number, because the mean of its divisors is an integer number (540519542784).

Almost surely, 2^{84679994420343} is an apocalyptic number.

84679994420343 is a deficient number, since it is larger than the sum of its proper divisors (70989633901449).

84679994420343 is a wasteful number, since it uses less digits than its factorization.

84679994420343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4383 (or 4361 counting only the distinct ones).

The product of its (nonzero) digits is 1128701952, while the sum is 72.

The spelling of 84679994420343 in words is "eighty-four trillion, six hundred seventy-nine billion, nine hundred ninety-four million, four hundred twenty thousand, three hundred forty-three".