41400409 has 2 divisors, whose sum is σ = 41400410. Its totient is φ = 41400408.

The previous prime is 41400383. The next prime is 41400419. The reversal of 41400409 is 90400414.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41319184 + 81225 = 6428^2 + 285^2 .

It is a cyclic number.

It is not a de Polignac number, because 41400409 - 2²³ = 33011801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 41400409.

It is not a weakly prime, because it can be changed into another prime (41400419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20700204 + 20700205.

It is an arithmetic number, because the mean of its divisors is an integer number (20700205).

Almost surely, 2^41400409 is an apocalyptic number.

It is an amenable number.

41400409 is a deficient number, since it is larger than the sum of its proper divisors (1).

41400409 is an equidigital number, since it uses as much as digits as its factorization.

41400409 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 22.

The square root of 41400409 is about 6434.3149596519. The cubic root of 41400409 is about 345.9406076011.

The spelling of 41400409 in words is "forty-one million, four hundred thousand, four hundred nine".