84678044 has 12 divisors (see below), whose sum is σ = 161658168. Its totient is φ = 38490000.

The previous prime is 84678031. The next prime is 84678049. The reversal of 84678044 is 44087648.

It is a super-2 number, since 2×84678044² = 14340742271331872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84677992 and 84678010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84678049) 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 3 ways as a sum of consecutive naturals, for example, 962207 + ... + 962294.

It is an arithmetic number, because the mean of its divisors is an integer number (13471514).

Almost surely, 2^84678044 is an apocalyptic number.

It is an amenable number.

84678044 is a deficient number, since it is larger than the sum of its proper divisors (76980124).

84678044 is a wasteful number, since it uses less digits than its factorization.

84678044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924516 (or 1924514 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 41.

The square root of 84678044 is about 9202.0673764106. The cubic root of 84678044 is about 439.1271331985.

The spelling of 84678044 in words is "eighty-four million, six hundred seventy-eight thousand, forty-four".