999999960 has 64 divisors (see below), whose sum is σ = 3002400000. Its totient is φ = 266453376.

The previous prime is 999999937. The next prime is 1000000007. The reversal of 999999960 is 69999999.

It is a nialpdrome in base 10.

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 15 ways as a sum of consecutive naturals, for example, 197541 + ... + 202539.

It is an arithmetic number, because the mean of its divisors is an integer number (46912500).

Almost surely, 2^999999960 is an apocalyptic number.

It is an amenable number.

999999960 is an abundant number, since it is smaller than the sum of its proper divisors (2002400040).

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

999999960 is a wasteful number, since it uses less digits than its factorization.

999999960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6680 (or 6676 counting only the distinct ones).

The product of its (nonzero) digits is 28697814, while the sum is 69.

The square root of 999999960 is about 31622.7759692283. The cubic root of 999999960 is about 999.9999866667. Note that the first 4 decimals are identical.

The spelling of 999999960 in words is "nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred sixty".