84379789 has 16 divisors (see below), whose sum is σ = 96768000. Its totient is φ = 72887040.

The previous prime is 84379783. The next prime is 84379819. The reversal of 84379789 is 98797348.

It is a cyclic number.

It is not a de Polignac number, because 84379789 - 2²¹ = 82282637 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 (84379783) 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 15 ways as a sum of consecutive naturals, for example, 41212 + ... + 43210.

It is an arithmetic number, because the mean of its divisors is an integer number (6048000).

Almost surely, 2^84379789 is an apocalyptic number.

It is an amenable number.

84379789 is a deficient number, since it is larger than the sum of its proper divisors (12388211).

84379789 is a wasteful number, since it uses less digits than its factorization.

84379789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220.

The product of its digits is 3048192, while the sum is 55.

The square root of 84379789 is about 9185.8472118798. The cubic root of 84379789 is about 438.6109587207.

The spelling of 84379789 in words is "eighty-four million, three hundred seventy-nine thousand, seven hundred eighty-nine".