9963880 has 16 divisors (see below), whose sum is σ = 22418820. Its totient is φ = 3985536.

The previous prime is 9963871. The next prime is 9963883. The reversal of 9963880 is 883699.

It can be written as a sum of positive squares in 2 ways, for example, as 9897316 + 66564 = 3146^2 + 258^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (9963883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124509 + ... + 124588.

Almost surely, 2^9963880 is an apocalyptic number.

It is an amenable number.

9963880 is an abundant number, since it is smaller than the sum of its proper divisors (12454940).

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

9963880 is a wasteful number, since it uses less digits than its factorization.

9963880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249108 (or 249104 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 9963880 is about 3156.5614202800. The cubic root of 9963880 is about 215.1837621280.

The spelling of 9963880 in words is "nine million, nine hundred sixty-three thousand, eight hundred eighty".