84823947429 has 32 divisors (see below), whose sum is σ = 123603661440. Its totient is φ = 51429869568.

The previous prime is 84823947407. The next prime is 84823947431. The reversal of 84823947429 is 92474932848.

It is a happy number.

It is not a de Polignac number, because 84823947429 - 2¹³ = 84823939237 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84823947469) 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 31 ways as a sum of consecutive naturals, for example, 939117 + ... + 1025469.

It is an arithmetic number, because the mean of its divisors is an integer number (3862614420).

Almost surely, 2^84823947429 is an apocalyptic number.

84823947429 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

84823947429 is a deficient number, since it is larger than the sum of its proper divisors (38779714011).

84823947429 is a wasteful number, since it uses less digits than its factorization.

84823947429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86741.

The product of its digits is 27869184, while the sum is 60.

The spelling of 84823947429 in words is "eighty-four billion, eight hundred twenty-three million, nine hundred forty-seven thousand, four hundred twenty-nine".