999999104 has 32 divisors (see below), whose sum is σ = 2145434340. Its totient is φ = 461537280.

The previous prime is 999999103. The next prime is 999999107. The reversal of 999999104 is 401999999.

It can be written as a sum of positive squares in 2 ways, for example, as 988976704 + 11022400 = 31448^2 + 3320^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (999999103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298817 + ... + 302144.

Almost surely, 2^999999104 is an apocalyptic number.

It is an amenable number.

999999104 is an abundant number, since it is smaller than the sum of its proper divisors (1145435236).

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

999999104 is a wasteful number, since it uses less digits than its factorization.

999999104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600988 (or 600976 counting only the distinct ones).

The product of its (nonzero) digits is 2125764, while the sum is 59.

The square root of 999999104 is about 31622.7624346767. The cubic root of 999999104 is about 999.9997013332. Note that the first 3 decimals are identical.

The spelling of 999999104 in words is "nine hundred ninety-nine million, nine hundred ninety-nine thousand, one hundred four".