9869261 has 2 divisors, whose sum is σ = 9869262. Its totient is φ = 9869260.

The previous prime is 9869257. The next prime is 9869263. The reversal of 9869261 is 1629689.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9796900 + 72361 = 3130^2 + 269^2 .

It is an emirp because it is prime and its reverse (1629689) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9869261 - 2² = 9869257 is a prime.

It is a super-2 number, since 2×9869261² = 194804625372242, which contains 22 as substring.

Together with 9869263, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9869263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4934630 + 4934631.

It is an arithmetic number, because the mean of its divisors is an integer number (4934631).

Almost surely, 2^9869261 is an apocalyptic number.

It is an amenable number.

9869261 is a deficient number, since it is larger than the sum of its proper divisors (1).

9869261 is an equidigital number, since it uses as much as digits as its factorization.

9869261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 41.

The square root of 9869261 is about 3141.5379991335. The cubic root of 9869261 is about 214.5004518911.

The spelling of 9869261 in words is "nine million, eight hundred sixty-nine thousand, two hundred sixty-one".