999959508 has 18 divisors (see below), whose sum is σ = 2527675514. Its totient is φ = 333319824.

The previous prime is 999959507. The next prime is 999959557. The reversal of 999959508 is 805959999.

It can be written as a sum of positive squares in only one way, i.e., 938932164 + 61027344 = 30642^2 + 7812^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999959507) 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 5 ways as a sum of consecutive naturals, for example, 13888291 + ... + 13888362.

Almost surely, 2^999959508 is an apocalyptic number.

It is an amenable number.

999959508 is an abundant number, since it is smaller than the sum of its proper divisors (1527716006).

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

999959508 is a wasteful number, since it uses less digits than its factorization.

999959508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27776663 (or 27776658 counting only the distinct ones).

The product of its (nonzero) digits is 11809800, while the sum is 63.

The square root of 999959508 is about 31622.1363604675. The cubic root of 999959508 is about 999.9865024845.

The spelling of 999959508 in words is "nine hundred ninety-nine million, nine hundred fifty-nine thousand, five hundred eight".