84748778 has 16 divisors (see below), whose sum is σ = 134412000. Its totient is φ = 39964752.

The previous prime is 84748777. The next prime is 84748787. The reversal of 84748778 is 87784748.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (84748777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3833 + ... + 13571.

It is an arithmetic number, because the mean of its divisors is an integer number (8400750).

Almost surely, 2^84748778 is an apocalyptic number.

84748778 is a deficient number, since it is larger than the sum of its proper divisors (49663222).

84748778 is a wasteful number, since it uses less digits than its factorization.

84748778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9989.

The product of its digits is 2809856, while the sum is 53.

The square root of 84748778 is about 9205.9099495922. The cubic root of 84748778 is about 439.2493710003.

The spelling of 84748778 in words is "eighty-four million, seven hundred forty-eight thousand, seven hundred seventy-eight".