84243853 has 4 divisors (see below), whose sum is σ = 88677760. Its totient is φ = 79809948.

The previous prime is 84243851. The next prime is 84243877. The reversal of 84243853 is 35834248.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84243853 - 2¹ = 84243851 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84243851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2216925 + ... + 2216962.

It is an arithmetic number, because the mean of its divisors is an integer number (22169440).

Almost surely, 2^84243853 is an apocalyptic number.

It is an amenable number.

84243853 is a deficient number, since it is larger than the sum of its proper divisors (4433907).

84243853 is a wasteful number, since it uses less digits than its factorization.

84243853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4433906.

The product of its digits is 92160, while the sum is 37.

The square root of 84243853 is about 9178.4450208083. The cubic root of 84243853 is about 438.3752977633.

The spelling of 84243853 in words is "eighty-four million, two hundred forty-three thousand, eight hundred fifty-three".