9081409 has 2 divisors, whose sum is σ = 9081410. Its totient is φ = 9081408.

The previous prime is 9081353. The next prime is 9081421. The reversal of 9081409 is 9041809.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5895184 + 3186225 = 2428^2 + 1785^2 .

It is a cyclic number.

It is not a de Polignac number, because 9081409 - 2¹¹ = 9079361 is a prime.

It is not a weakly prime, because it can be changed into another prime (9081469) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4540704 + 4540705.

It is an arithmetic number, because the mean of its divisors is an integer number (4540705).

Almost surely, 2^9081409 is an apocalyptic number.

It is an amenable number.

9081409 is a deficient number, since it is larger than the sum of its proper divisors (1).

9081409 is an equidigital number, since it uses as much as digits as its factorization.

9081409 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 31.

The square root of 9081409 is about 3013.5376221312. The cubic root of 9081409 is about 208.6336768110.

The spelling of 9081409 in words is "nine million, eighty-one thousand, four hundred nine".