999912508 has 48 divisors (see below), whose sum is σ = 2030434560. Its totient is φ = 422015616.

The previous prime is 999912503. The next prime is 999912509. The reversal of 999912508 is 805219999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999912503) 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 15 ways as a sum of consecutive naturals, for example, 764391 + ... + 765697.

It is an arithmetic number, because the mean of its divisors is an integer number (42300720).

Almost surely, 2^999912508 is an apocalyptic number.

It is an amenable number.

999912508 is an abundant number, since it is smaller than the sum of its proper divisors (1030522052).

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

999912508 is a wasteful number, since it uses less digits than its factorization.

999912508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714 (or 1712 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 52.

The square root of 999912508 is about 31621.3932014388. The cubic root of 999912508 is about 999.9708351494.

The spelling of 999912508 in words is "nine hundred ninety-nine million, nine hundred twelve thousand, five hundred eight".