40211191 has 2 divisors, whose sum is σ = 40211192. Its totient is φ = 40211190.

The previous prime is 40211173. The next prime is 40211203. The reversal of 40211191 is 19111204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40211191 - 2⁹ = 40210679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40211111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20105595 + 20105596.

It is an arithmetic number, because the mean of its divisors is an integer number (20105596).

Almost surely, 2^40211191 is an apocalyptic number.

40211191 is a deficient number, since it is larger than the sum of its proper divisors (1).

40211191 is an equidigital number, since it uses as much as digits as its factorization.

40211191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 40211191 is about 6341.2294549243. The cubic root of 40211191 is about 342.5960190411.

Adding to 40211191 its reverse (19111204), we get a palindrome (59322395).

The spelling of 40211191 in words is "forty million, two hundred eleven thousand, one hundred ninety-one".