999900130 has 16 divisors (see below), whose sum is σ = 1800865080. Its totient is φ = 399727872.

The previous prime is 999900107. The next prime is 999900131. The reversal of 999900130 is 31009999.

It can be written as a sum of positive squares in 4 ways, for example, as 987907761 + 11992369 = 31431^2 + 3463^2 .

It is not an unprimeable number, because it can be changed into a prime (999900131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10365 + ... + 45904.

Almost surely, 2^999900130 is an apocalyptic number.

999900130 is a deficient number, since it is larger than the sum of its proper divisors (800964950).

999900130 is a wasteful number, since it uses less digits than its factorization.

999900130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58053.

The product of its (nonzero) digits is 19683, while the sum is 40.

The square root of 999900130 is about 31621.1974789065. The cubic root of 999900130 is about 999.9667088917.

The spelling of 999900130 in words is "nine hundred ninety-nine million, nine hundred thousand, one hundred thirty".