9943121960 has 32 divisors (see below), whose sum is σ = 22374977760. Its totient is φ = 3976723776.

The previous prime is 9943121957. The next prime is 9943121983. The reversal of 9943121960 is 691213499.

It is a happy number.

It is a super-2 number, since 2×9943121960² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464207 + ... + 485153.

It is an arithmetic number, because the mean of its divisors is an integer number (699218055).

Almost surely, 2^9943121960 is an apocalyptic number.

It is an amenable number.

9943121960 is an abundant number, since it is smaller than the sum of its proper divisors (12431855800).

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

9943121960 is a wasteful number, since it uses less digits than its factorization.

9943121960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32825 (or 32821 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 9943121960 is about 99715.2042569236. The cubic root of 9943121960 is about 2150.3422537892.

The spelling of 9943121960 in words is "nine billion, nine hundred forty-three million, one hundred twenty-one thousand, nine hundred sixty".