9943138 has 8 divisors (see below), whose sum is σ = 14928732. Its totient is φ = 4966896.

The previous prime is 9943127. The next prime is 9943139. The reversal of 9943138 is 8313499.

9943138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 9815689 + 127449 = 3133^2 + 357^2 .

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 = 9943097 and 9943106.

It is not an unprimeable number, because it can be changed into a prime (9943139) 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, 1756 + ... + 4792.

Almost surely, 2^9943138 is an apocalyptic number.

9943138 is a deficient number, since it is larger than the sum of its proper divisors (4985594).

9943138 is a wasteful number, since it uses less digits than its factorization.

9943138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4676.

The product of its digits is 23328, while the sum is 37.

The square root of 9943138 is about 3153.2741713971. The cubic root of 9943138 is about 215.0343410082.

The spelling of 9943138 in words is "nine million, nine hundred forty-three thousand, one hundred thirty-eight".