9968139 has 6 divisors (see below), whose sum is σ = 14398436. Its totient is φ = 6645420.

The previous prime is 9968129. The next prime is 9968149. The reversal of 9968139 is 9318699.

It is an interprime number because it is at equal distance from previous prime (9968129) and next prime (9968149).

It is not a de Polignac number, because 9968139 - 2⁸ = 9967883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9968094 and 9968103.

It is not an unprimeable number, because it can be changed into a prime (9968129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 553777 + ... + 553794.

Almost surely, 2^9968139 is an apocalyptic number.

9968139 is a deficient number, since it is larger than the sum of its proper divisors (4430297).

9968139 is a wasteful number, since it uses less digits than its factorization.

9968139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107577 (or 1107574 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 9968139 is about 3157.2359747095. The cubic root of 9968139 is about 215.2144174247.

The spelling of 9968139 in words is "nine million, nine hundred sixty-eight thousand, one hundred thirty-nine".