84709844 has 24 divisors (see below), whose sum is σ = 158737320. Its totient is φ = 39412736.

The previous prime is 84709843. The next prime is 84709853. The reversal of 84709844 is 44890748.

It can be written as a sum of positive squares in 4 ways, for example, as 10956100 + 73753744 = 3310^2 + 8588^2 .

It is a junction number, because it is equal to n+sod(n) for n = 84709795 and 84709804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84709843) 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, 947 + ... + 13050.

It is an arithmetic number, because the mean of its divisors is an integer number (6614055).

Almost surely, 2^84709844 is an apocalyptic number.

It is an amenable number.

84709844 is a deficient number, since it is larger than the sum of its proper divisors (74027476).

84709844 is a wasteful number, since it uses less digits than its factorization.

84709844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14107 (or 14105 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 84709844 is about 9203.7950868107. The cubic root of 84709844 is about 439.1820962661.

The spelling of 84709844 in words is "eighty-four million, seven hundred nine thousand, eight hundred forty-four".