9946840 has 32 divisors (see below), whose sum is σ = 22554000. Its totient is φ = 3947904.

The previous prime is 9946831. The next prime is 9946841. The reversal of 9946840 is 486499.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9946793 and 9946802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9946841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4666 + ... + 6454.

Almost surely, 2^9946840 is an apocalyptic number.

It is an amenable number.

9946840 is an abundant number, since it is smaller than the sum of its proper divisors (12607160).

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

9946840 is a wasteful number, since it uses less digits than its factorization.

9946840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939 (or 1935 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 9946840 is about 3153.8611256680. The cubic root of 9946840 is about 215.0610246821.

The spelling of 9946840 in words is "nine million, nine hundred forty-six thousand, eight hundred forty".