84385543 has 4 divisors (see below), whose sum is σ = 92056968. Its totient is φ = 76714120.

The previous prime is 84385537. The next prime is 84385547. The reversal of 84385543 is 34558348.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84385543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84385496 and 84385505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84385547) 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, 3835696 + ... + 3835717.

It is an arithmetic number, because the mean of its divisors is an integer number (23014242).

Almost surely, 2^84385543 is an apocalyptic number.

84385543 is a deficient number, since it is larger than the sum of its proper divisors (7671425).

84385543 is a wasteful number, since it uses less digits than its factorization.

84385543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7671424.

The product of its digits is 230400, while the sum is 40.

The square root of 84385543 is about 9186.1604057408. The cubic root of 84385543 is about 438.6209283675.

The spelling of 84385543 in words is "eighty-four million, three hundred eighty-five thousand, five hundred forty-three".