84889079 has 4 divisors (see below), whose sum is σ = 92606280. Its totient is φ = 77171880.

The previous prime is 84889019. The next prime is 84889081. The reversal of 84889079 is 97098848.

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-84889079 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84889079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84889019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3858584 + ... + 3858605.

It is an arithmetic number, because the mean of its divisors is an integer number (23151570).

Almost surely, 2^84889079 is an apocalyptic number.

84889079 is a deficient number, since it is larger than the sum of its proper divisors (7717201).

84889079 is a wasteful number, since it uses less digits than its factorization.

84889079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7717200.

The product of its (nonzero) digits is 1161216, while the sum is 53.

The square root of 84889079 is about 9213.5269576856. The cubic root of 84889079 is about 439.4916287687.

The spelling of 84889079 in words is "eighty-four million, eight hundred eighty-nine thousand, seventy-nine".