999988530 has 32 divisors (see below), whose sum is σ = 2409948288. Its totient is φ = 265555200.

The previous prime is 999988523. The next prime is 999988541. The reversal of 999988530 is 35889999.

It is a nialpdrome in base 10.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 61926 + ... + 76385.

It is an arithmetic number, because the mean of its divisors is an integer number (75310884).

Almost surely, 2^999988530 is an apocalyptic number.

999988530 is an abundant number, since it is smaller than the sum of its proper divisors (1409959758).

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

999988530 is a wasteful number, since it uses less digits than its factorization.

999988530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138562.

The product of its (nonzero) digits is 6298560, while the sum is 60.

The square root of 999988530 is about 31622.5952445399. The cubic root of 999988530 is about 999.9961766520.

The spelling of 999988530 in words is "nine hundred ninety-nine million, nine hundred eighty-eight thousand, five hundred thirty".