40194911 has 2 divisors, whose sum is σ = 40194912. Its totient is φ = 40194910.

The previous prime is 40194907. The next prime is 40194923. The reversal of 40194911 is 11949104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40194911 - 2² = 40194907 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40194971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20097455 + 20097456.

It is an arithmetic number, because the mean of its divisors is an integer number (20097456).

Almost surely, 2^40194911 is an apocalyptic number.

40194911 is a deficient number, since it is larger than the sum of its proper divisors (1).

40194911 is an equidigital number, since it uses as much as digits as its factorization.

40194911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 40194911 is about 6339.9456622277. The cubic root of 40194911 is about 342.5497780493.

The spelling of 40194911 in words is "forty million, one hundred ninety-four thousand, nine hundred eleven".