9545981 has 2 divisors, whose sum is σ = 9545982. Its totient is φ = 9545980.

The previous prime is 9545969. The next prime is 9546001. The reversal of 9545981 is 1895459.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8357881 + 1188100 = 2891^2 + 1090^2 .

It is a cyclic number.

It is not a de Polignac number, because 9545981 - 2⁶ = 9545917 is a prime.

It is a super-2 number, since 2×9545981² = 182251506504722, 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 (9545911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4772990 + 4772991.

It is an arithmetic number, because the mean of its divisors is an integer number (4772991).

Almost surely, 2^9545981 is an apocalyptic number.

It is an amenable number.

9545981 is a deficient number, since it is larger than the sum of its proper divisors (1).

9545981 is an equidigital number, since it uses as much as digits as its factorization.

9545981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 41.

The square root of 9545981 is about 3089.6571007152. The cubic root of 9545981 is about 212.1323266073.

The spelling of 9545981 in words is "nine million, five hundred forty-five thousand, nine hundred eighty-one".