9256981 has 2 divisors, whose sum is σ = 9256982. Its totient is φ = 9256980.

The previous prime is 9256969. The next prime is 9256987. The reversal of 9256981 is 1896529.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7474756 + 1782225 = 2734^2 + 1335^2 .

It is an emirp because it is prime and its reverse (1896529) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9256981 - 2⁹ = 9256469 is a prime.

It is a super-2 number, since 2×9256981² = 171383394468722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9256987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4628490 + 4628491.

It is an arithmetic number, because the mean of its divisors is an integer number (4628491).

Almost surely, 2^9256981 is an apocalyptic number.

It is an amenable number.

9256981 is a deficient number, since it is larger than the sum of its proper divisors (1).

9256981 is an equidigital number, since it uses as much as digits as its factorization.

9256981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 40.

The square root of 9256981 is about 3042.5287180239. The cubic root of 9256981 is about 209.9696176756.

The spelling of 9256981 in words is "nine million, two hundred fifty-six thousand, nine hundred eighty-one".