40411409 has 2 divisors, whose sum is σ = 40411410. Its totient is φ = 40411408.

The previous prime is 40411403. The next prime is 40411411. The reversal of 40411409 is 90411404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37761025 + 2650384 = 6145^2 + 1628^2 .

It is a cyclic number.

It is not a de Polignac number, because 40411409 - 2⁸ = 40411153 is a prime.

Together with 40411411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40411403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20205704 + 20205705.

It is an arithmetic number, because the mean of its divisors is an integer number (20205705).

Almost surely, 2^40411409 is an apocalyptic number.

It is an amenable number.

40411409 is a deficient number, since it is larger than the sum of its proper divisors (1).

40411409 is an equidigital number, since it uses as much as digits as its factorization.

40411409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 40411409 is about 6356.9968538611. The cubic root of 40411409 is about 343.1636914994.

The spelling of 40411409 in words is "forty million, four hundred eleven thousand, four hundred nine".