9967538 has 8 divisors (see below), whose sum is σ = 17087232. Its totient is φ = 4271796.

The previous prime is 9967537. The next prime is 9967549. The reversal of 9967538 is 8357699.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 9967492 and 9967501.

It is not an unprimeable number, because it can be changed into a prime (9967537) 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 3 ways as a sum of consecutive naturals, for example, 355970 + ... + 355997.

It is an arithmetic number, because the mean of its divisors is an integer number (2135904).

Almost surely, 2^9967538 is an apocalyptic number.

9967538 is a deficient number, since it is larger than the sum of its proper divisors (7119694).

9967538 is a wasteful number, since it uses less digits than its factorization.

9967538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711976.

The product of its digits is 408240, while the sum is 47.

The square root of 9967538 is about 3157.1407950866. The cubic root of 9967538 is about 215.2100920950.

The spelling of 9967538 in words is "nine million, nine hundred sixty-seven thousand, five hundred thirty-eight".