9969938 has 16 divisors (see below), whose sum is σ = 16593120. Its totient is φ = 4454400.

The previous prime is 9969931. The next prime is 9969943. The reversal of 9969938 is 8399699.

It is a self number, because there is not a number n which added to its sum of digits gives 9969938.

It is not an unprimeable number, because it can be changed into a prime (9969931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2543 + ... + 5138.

It is an arithmetic number, because the mean of its divisors is an integer number (1037070).

Almost surely, 2^9969938 is an apocalyptic number.

9969938 is a deficient number, since it is larger than the sum of its proper divisors (6623182).

9969938 is a wasteful number, since it uses less digits than its factorization.

9969938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7753.

The product of its digits is 944784, while the sum is 53.

The square root of 9969938 is about 3157.5208629556. The cubic root of 9969938 is about 215.2273635874.

The spelling of 9969938 in words is "nine million, nine hundred sixty-nine thousand, nine hundred thirty-eight".