9941820 has 48 divisors (see below), whose sum is σ = 31815168. Its totient is φ = 2272320.

The previous prime is 9941779. The next prime is 9941843. The reversal of 9941820 is 281499.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11416 + ... + 12255.

It is an arithmetic number, because the mean of its divisors is an integer number (662816).

Almost surely, 2^9941820 is an apocalyptic number.

It is an amenable number.

9941820 is an abundant number, since it is smaller than the sum of its proper divisors (21873348).

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

9941820 is a wasteful number, since it uses less digits than its factorization.

9941820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23690 (or 23688 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 9941820 is about 3153.0651753492. The cubic root of 9941820 is about 215.0248393872.

The spelling of 9941820 in words is "nine million, nine hundred forty-one thousand, eight hundred twenty".