84288839 has 8 divisors (see below), whose sum is σ = 89900928. Its totient is φ = 78749440.

The previous prime is 84288823. The next prime is 84288851. The reversal of 84288839 is 93888248.

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

It is not a de Polignac number, because 84288839 - 2⁴ = 84288823 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 (84288889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15767 + ... + 20424.

It is an arithmetic number, because the mean of its divisors is an integer number (11237616).

Almost surely, 2^84288839 is an apocalyptic number.

84288839 is a deficient number, since it is larger than the sum of its proper divisors (5612089).

84288839 is a wasteful number, since it uses less digits than its factorization.

84288839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36345.

The product of its digits is 884736, while the sum is 50.

The square root of 84288839 is about 9180.8953267097. The cubic root of 84288839 is about 438.4533143038.

The spelling of 84288839 in words is "eighty-four million, two hundred eighty-eight thousand, eight hundred thirty-nine".