40159811 has 2 divisors, whose sum is σ = 40159812. Its totient is φ = 40159810.

The previous prime is 40159793. The next prime is 40159853. The reversal of 40159811 is 11895104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40159811 - 2⁶ = 40159747 is a prime.

It is a super-2 number, since 2×40159811² = 3225620839111442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40159871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20079905 + 20079906.

It is an arithmetic number, because the mean of its divisors is an integer number (20079906).

Almost surely, 2^40159811 is an apocalyptic number.

40159811 is a deficient number, since it is larger than the sum of its proper divisors (1).

40159811 is an equidigital number, since it uses as much as digits as its factorization.

40159811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 29.

The square root of 40159811 is about 6337.1768951166. The cubic root of 40159811 is about 342.4500390655.

The spelling of 40159811 in words is "forty million, one hundred fifty-nine thousand, eight hundred eleven".