84542959 has 4 divisors (see below), whose sum is σ = 85380120. Its totient is φ = 83705800.

The previous prime is 84542923. The next prime is 84542981. The reversal of 84542959 is 95924548.

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 84542959 - 2¹³ = 84534767 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 (84540959) 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, 418429 + ... + 418630.

It is an arithmetic number, because the mean of its divisors is an integer number (21345030).

Almost surely, 2^84542959 is an apocalyptic number.

84542959 is a deficient number, since it is larger than the sum of its proper divisors (837161).

84542959 is a wasteful number, since it uses less digits than its factorization.

84542959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837160.

The product of its digits is 518400, while the sum is 46.

The square root of 84542959 is about 9194.7245200713. The cubic root of 84542959 is about 438.8934990015.

The spelling of 84542959 in words is "eighty-four million, five hundred forty-two thousand, nine hundred fifty-nine".