8991041 has 2 divisors, whose sum is σ = 8991042. Its totient is φ = 8991040.

The previous prime is 8991029. The next prime is 8991067. The reversal of 8991041 is 1401998.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8761600 + 229441 = 2960^2 + 479^2 .

It is a cyclic number.

It is not a de Polignac number, because 8991041 - 2¹⁸ = 8728897 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 8990989 and 8991007.

It is not a weakly prime, because it can be changed into another prime (8991001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4495520 + 4495521.

It is an arithmetic number, because the mean of its divisors is an integer number (4495521).

Almost surely, 2^8991041 is an apocalyptic number.

It is an amenable number.

8991041 is a deficient number, since it is larger than the sum of its proper divisors (1).

8991041 is an equidigital number, since it uses as much as digits as its factorization.

8991041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 8991041 is about 2998.5064615572. The cubic root of 8991041 is about 207.9393391277.

The spelling of 8991041 in words is "eight million, nine hundred ninety-one thousand, forty-one".