9121841 has 2 divisors, whose sum is σ = 9121842. Its totient is φ = 9121840.

The previous prime is 9121837. The next prime is 9121859. The reversal of 9121841 is 1481219.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4857616 + 4264225 = 2204^2 + 2065^2 .

It is an emirp because it is prime and its reverse (1481219) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9121841 - 2² = 9121837 is a prime.

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 9121841.

It is not a weakly prime, because it can be changed into another prime (9121241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4560920 + 4560921.

It is an arithmetic number, because the mean of its divisors is an integer number (4560921).

Almost surely, 2^9121841 is an apocalyptic number.

It is an amenable number.

9121841 is a deficient number, since it is larger than the sum of its proper divisors (1).

9121841 is an equidigital number, since it uses as much as digits as its factorization.

9121841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 26.

The square root of 9121841 is about 3020.2385667361. The cubic root of 9121841 is about 208.9428428212.

The spelling of 9121841 in words is "nine million, one hundred twenty-one thousand, eight hundred forty-one".