9059549981 has 2 divisors, whose sum is σ = 9059549982. Its totient is φ = 9059549980.

The previous prime is 9059549929. The next prime is 9059550029. The reversal of 9059549981 is 1899459509.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8745055225 + 314494756 = 93515^2 + 17734^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9059549981 is a prime.

It is a super-2 number, since 2×9059549981² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 9059549981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9059540981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4529774990 + 4529774991.

It is an arithmetic number, because the mean of its divisors is an integer number (4529774991).

Almost surely, 2^9059549981 is an apocalyptic number.

It is an amenable number.

9059549981 is a deficient number, since it is larger than the sum of its proper divisors (1).

9059549981 is an equidigital number, since it uses as much as digits as its factorization.

9059549981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5248800, while the sum is 59.

The square root of 9059549981 is about 95181.6683033030. The cubic root of 9059549981 is about 2084.6614805418.

The spelling of 9059549981 in words is "nine billion, fifty-nine million, five hundred forty-nine thousand, nine hundred eighty-one".