9906738 has 16 divisors (see below), whose sum is σ = 19868160. Its totient is φ = 3293136.

The previous prime is 9906737. The next prime is 9906751. The reversal of 9906738 is 8376099.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 9906738.

It is not an unprimeable number, because it can be changed into a prime (9906731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303 + ... + 4461.

It is an arithmetic number, because the mean of its divisors is an integer number (1241760).

Almost surely, 2^9906738 is an apocalyptic number.

9906738 is an abundant number, since it is smaller than the sum of its proper divisors (9961422).

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

9906738 is a wasteful number, since it uses less digits than its factorization.

9906738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4561.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 9906738 is about 3147.4971008724. The cubic root of 9906738 is about 214.7716197606.

The spelling of 9906738 in words is "nine million, nine hundred six thousand, seven hundred thirty-eight".