8969231 has 2 divisors, whose sum is σ = 8969232. Its totient is φ = 8969230.

The previous prime is 8969221. The next prime is 8969237. The reversal of 8969231 is 1329698.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8969231 is a prime.

It is a super-2 number, since 2×8969231² = 160894209462722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8969237) 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 as a sum of consecutive naturals, namely, 4484615 + 4484616.

It is an arithmetic number, because the mean of its divisors is an integer number (4484616).

Almost surely, 2^8969231 is an apocalyptic number.

8969231 is a deficient number, since it is larger than the sum of its proper divisors (1).

8969231 is an equidigital number, since it uses as much as digits as its factorization.

8969231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 38.

The square root of 8969231 is about 2994.8674428094. The cubic root of 8969231 is about 207.7710668448.

The spelling of 8969231 in words is "eight million, nine hundred sixty-nine thousand, two hundred thirty-one".