84920823 has 24 divisors (see below), whose sum is σ = 139055280. Its totient is φ = 49507200.

The previous prime is 84920821. The next prime is 84920837. The reversal of 84920823 is 32802948.

It is not a de Polignac number, because 84920823 - 2¹ = 84920821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84920821) 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 23 ways as a sum of consecutive naturals, for example, 16878 + ... + 21323.

It is an arithmetic number, because the mean of its divisors is an integer number (5793970).

Almost surely, 2^84920823 is an apocalyptic number.

84920823 is a deficient number, since it is larger than the sum of its proper divisors (54134457).

84920823 is a wasteful number, since it uses less digits than its factorization.

84920823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38239 (or 38236 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 84920823 is about 9215.2494811589. The cubic root of 84920823 is about 439.5464041053.

The spelling of 84920823 in words is "eighty-four million, nine hundred twenty thousand, eight hundred twenty-three".