84936823 has 4 divisors (see below), whose sum is σ = 84958288. Its totient is φ = 84915360.

The previous prime is 84936809. The next prime is 84936851. The reversal of 84936823 is 32863948.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84936823 - 2¹⁷ = 84805751 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84936823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84936323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2883 + ... + 13348.

It is an arithmetic number, because the mean of its divisors is an integer number (21239572).

Almost surely, 2^84936823 is an apocalyptic number.

84936823 is a deficient number, since it is larger than the sum of its proper divisors (21465).

84936823 is a wasteful number, since it uses less digits than its factorization.

84936823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21464.

The product of its digits is 248832, while the sum is 43.

The square root of 84936823 is about 9216.1175665244. The cubic root of 84936823 is about 439.5740074679.

The spelling of 84936823 in words is "eighty-four million, nine hundred thirty-six thousand, eight hundred twenty-three".