9963940 has 24 divisors (see below), whose sum is σ = 23913792. Its totient is φ = 3416160.

The previous prime is 9963931. The next prime is 9963959. The reversal of 9963940 is 493699.

It is a junction number, because it is equal to n+sod(n) for n = 9963893 and 9963902.

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, 35446 + ... + 35725.

It is an arithmetic number, because the mean of its divisors is an integer number (996408).

Almost surely, 2^9963940 is an apocalyptic number.

It is an amenable number.

9963940 is an abundant number, since it is smaller than the sum of its proper divisors (13949852).

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

9963940 is a wasteful number, since it uses less digits than its factorization.

9963940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71187 (or 71185 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 9963940 is about 3156.5709242784. The cubic root of 9963940 is about 215.1841940548.

The spelling of 9963940 in words is "nine million, nine hundred sixty-three thousand, nine hundred forty".