889894778 has 16 divisors (see below), whose sum is σ = 1341909504. Its totient is φ = 442598160.

The previous prime is 889894777. The next prime is 889894787. The reversal of 889894778 is 877498988.

It is not an unprimeable number, because it can be changed into a prime (889894777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376376 + ... + 378732.

It is an arithmetic number, because the mean of its divisors is an integer number (83869344).

Almost surely, 2^889894778 is an apocalyptic number.

889894778 is a deficient number, since it is larger than the sum of its proper divisors (452014726).

889894778 is a wasteful number, since it uses less digits than its factorization.

889894778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277.

The product of its digits is 65028096, while the sum is 68.

The square root of 889894778 is about 29831.1042034987. The cubic root of 889894778 is about 961.8622626007.

The spelling of 889894778 in words is "eight hundred eighty-nine million, eight hundred ninety-four thousand, seven hundred seventy-eight".