9409121 has 2 divisors, whose sum is σ = 9409122. Its totient is φ = 9409120.

The previous prime is 9409117. The next prime is 9409159. The reversal of 9409121 is 1219049.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9388096 + 21025 = 3064^2 + 145^2 .

It is a cyclic number.

It is not a de Polignac number, because 9409121 - 2² = 9409117 is a prime.

It is not a weakly prime, because it can be changed into another prime (9409111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4704560 + 4704561.

It is an arithmetic number, because the mean of its divisors is an integer number (4704561).

Almost surely, 2^9409121 is an apocalyptic number.

It is an amenable number.

9409121 is a deficient number, since it is larger than the sum of its proper divisors (1).

9409121 is an equidigital number, since it uses as much as digits as its factorization.

9409121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 9409121 is about 3067.4290537843. The cubic root of 9409121 is about 211.1136678566.

It can be divided in two parts, 9409 and 121, that multiplied together give a square (1138489 = 1067²).

The spelling of 9409121 in words is "nine million, four hundred nine thousand, one hundred twenty-one".