84881389 has 8 divisors (see below), whose sum is σ = 87009408. Its totient is φ = 82766880.

The previous prime is 84881383. The next prime is 84881393. The reversal of 84881389 is 98318848.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84881389 - 2⁹ = 84880877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84881383) 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 7 ways as a sum of consecutive naturals, for example, 9994 + ... + 16420.

It is an arithmetic number, because the mean of its divisors is an integer number (10876176).

Almost surely, 2^84881389 is an apocalyptic number.

It is an amenable number.

84881389 is a deficient number, since it is larger than the sum of its proper divisors (2128019).

84881389 is a wasteful number, since it uses less digits than its factorization.

84881389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6755.

The product of its digits is 442368, while the sum is 49.

The square root of 84881389 is about 9213.1096270478. The cubic root of 84881389 is about 439.4783573612.

The spelling of 84881389 in words is "eighty-four million, eight hundred eighty-one thousand, three hundred eighty-nine".