9958239 has 6 divisors (see below), whose sum is σ = 14384136. Its totient is φ = 6638820.

The previous prime is 9958237. The next prime is 9958253. The reversal of 9958239 is 9328599.

It is not a de Polignac number, because 9958239 - 2¹ = 9958237 is a prime.

It is a super-2 number, since 2×9958239² = 198333047962242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9958194 and 9958203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9958231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 553227 + ... + 553244.

It is an arithmetic number, because the mean of its divisors is an integer number (2397356).

Almost surely, 2^9958239 is an apocalyptic number.

9958239 is a deficient number, since it is larger than the sum of its proper divisors (4425897).

9958239 is a wasteful number, since it uses less digits than its factorization.

9958239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106477 (or 1106474 counting only the distinct ones).

The product of its digits is 174960, while the sum is 45.

The square root of 9958239 is about 3155.6677581773. The cubic root of 9958239 is about 215.1431460646.

The spelling of 9958239 in words is "nine million, nine hundred fifty-eight thousand, two hundred thirty-nine".