999999130 has 16 divisors (see below), whose sum is σ = 1938460104. Its totient is φ = 369230400.

The previous prime is 999999113. The next prime is 999999131. The reversal of 999999130 is 31999999.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 774008041 + 225991089 = 27821^2 + 15033^2 .

It is not an unprimeable number, because it can be changed into a prime (999999131) 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, 3846021 + ... + 3846280.

Almost surely, 2^999999130 is an apocalyptic number.

999999130 is a deficient number, since it is larger than the sum of its proper divisors (938460974).

999999130 is a wasteful number, since it uses less digits than its factorization.

999999130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7692321.

The product of its (nonzero) digits is 1594323, while the sum is 58.

The square root of 999999130 is about 31622.7628457730. The cubic root of 999999130 is about 999.9997099999. Note that the first 3 decimals are identical.

The spelling of 999999130 in words is "nine hundred ninety-nine million, nine hundred ninety-nine thousand, one hundred thirty".