999104778 has 48 divisors (see below), whose sum is σ = 2604189120. Its totient is φ = 270433728.

The previous prime is 999104741. The next prime is 999104779. The reversal of 999104778 is 877401999.

It is not an unprimeable number, because it can be changed into a prime (999104779) 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 23 ways as a sum of consecutive naturals, for example, 206275 + ... + 211062.

It is an arithmetic number, because the mean of its divisors is an integer number (54253940).

Almost surely, 2^999104778 is an apocalyptic number.

999104778 is an abundant number, since it is smaller than the sum of its proper divisors (1605084342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

999104778 is a wasteful number, since it uses less digits than its factorization.

999104778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417371 (or 417368 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 54.

The square root of 999104778 is about 31608.6187297073. The cubic root of 999104778 is about 999.7015035754.

The spelling of 999104778 in words is "nine hundred ninety-nine million, one hundred four thousand, seven hundred seventy-eight".