84543893 has 4 divisors (see below), whose sum is σ = 96621600. Its totient is φ = 72466188.

The previous prime is 84543887. The next prime is 84543911. The reversal of 84543893 is 39834548.

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 84543893 - 2¹⁰ = 84542869 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 (84543593) 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, 6038843 + ... + 6038856.

It is an arithmetic number, because the mean of its divisors is an integer number (24155400).

Almost surely, 2^84543893 is an apocalyptic number.

It is an amenable number.

84543893 is a deficient number, since it is larger than the sum of its proper divisors (12077707).

84543893 is a wasteful number, since it uses less digits than its factorization.

84543893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12077706.

The product of its digits is 414720, while the sum is 44.

The square root of 84543893 is about 9194.7753099247. The cubic root of 84543893 is about 438.8951152410.

The spelling of 84543893 in words is "eighty-four million, five hundred forty-three thousand, eight hundred ninety-three".