9908231 has 2 divisors, whose sum is σ = 9908232. Its totient is φ = 9908230.

The previous prime is 9908221. The next prime is 9908257. The reversal of 9908231 is 1328099.

It is a weak prime.

It is an emirp because it is prime and its reverse (1328099) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9908231 is a prime.

It is a super-2 number, since 2×9908231² = 196346083098722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9908221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4954115 + 4954116.

It is an arithmetic number, because the mean of its divisors is an integer number (4954116).

Almost surely, 2^9908231 is an apocalyptic number.

9908231 is a deficient number, since it is larger than the sum of its proper divisors (1).

9908231 is an equidigital number, since it uses as much as digits as its factorization.

9908231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 9908231 is about 3147.7342645147. The cubic root of 9908231 is about 214.7824083075.

The spelling of 9908231 in words is "nine million, nine hundred eight thousand, two hundred thirty-one".