40890911 has 2 divisors, whose sum is σ = 40890912. Its totient is φ = 40890910.

The previous prime is 40890887. The next prime is 40890917. The reversal of 40890911 is 11909804.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40890911 - 2¹⁴ = 40874527 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40890917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20445455 + 20445456.

It is an arithmetic number, because the mean of its divisors is an integer number (20445456).

Almost surely, 2^40890911 is an apocalyptic number.

40890911 is a deficient number, since it is larger than the sum of its proper divisors (1).

40890911 is an equidigital number, since it uses as much as digits as its factorization.

40890911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 40890911 is about 6394.6001438714. The cubic root of 40890911 is about 344.5156291732.

It can be divided in two parts, 408 and 90911, that added together give a palindrome (91319).

The spelling of 40890911 in words is "forty million, eight hundred ninety thousand, nine hundred eleven".