999998960 has 20 divisors (see below), whose sum is σ = 2324997768. Its totient is φ = 399999552.

The previous prime is 999998959. The next prime is 999998971. The reversal of 999998960 is 69899999.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 6249914 + ... + 6250073.

Almost surely, 2^999998960 is an apocalyptic number.

It is an amenable number.

999998960 is an abundant number, since it is smaller than the sum of its proper divisors (1324998808).

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

999998960 is a wasteful number, since it uses less digits than its factorization.

999998960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12500000 (or 12499994 counting only the distinct ones).

The product of its (nonzero) digits is 25509168, while the sum is 68.

The square root of 999998960 is about 31622.7601578357. The cubic root of 999998960 is about 999.9996533332. Note that the first 3 decimals are identical.

The spelling of 999998960 in words is "nine hundred ninety-nine million, nine hundred ninety-eight thousand, nine hundred sixty".