84687943 has 4 divisors (see below), whose sum is σ = 85161240. Its totient is φ = 84214648.

The previous prime is 84687913. The next prime is 84687973. The reversal of 84687943 is 34978648.

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

It is an interprime number because it is at equal distance from previous prime (84687913) and next prime (84687973).

It is a cyclic number.

It is not a de Polignac number, because 84687943 - 2²¹ = 82590791 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 (84687913) 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, 236380 + ... + 236737.

It is an arithmetic number, because the mean of its divisors is an integer number (21290310).

Almost surely, 2^84687943 is an apocalyptic number.

84687943 is a deficient number, since it is larger than the sum of its proper divisors (473297).

84687943 is a wasteful number, since it uses less digits than its factorization.

84687943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473296.

The product of its digits is 1161216, while the sum is 49.

The square root of 84687943 is about 9202.6052289555. The cubic root of 84687943 is about 439.1442440887.

The spelling of 84687943 in words is "eighty-four million, six hundred eighty-seven thousand, nine hundred forty-three".