9906940 has 12 divisors (see below), whose sum is σ = 20804616. Its totient is φ = 3962768.

The previous prime is 9906931. The next prime is 9906943. The reversal of 9906940 is 496099.

It is a self number, because there is not a number n which added to its sum of digits gives 9906940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9906943) 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, 247654 + ... + 247693.

It is an arithmetic number, because the mean of its divisors is an integer number (1733718).

Almost surely, 2^9906940 is an apocalyptic number.

It is an amenable number.

9906940 is an abundant number, since it is smaller than the sum of its proper divisors (10897676).

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

9906940 is a wasteful number, since it uses less digits than its factorization.

9906940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495356 (or 495354 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 9906940 is about 3147.5291896978. The cubic root of 9906940 is about 214.7730794934.

The spelling of 9906940 in words is "nine million, nine hundred six thousand, nine hundred forty".