40006163 has 2 divisors, whose sum is σ = 40006164. Its totient is φ = 40006162.

The previous prime is 40006159. The next prime is 40006193. The reversal of 40006163 is 36160004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40006163 - 2² = 40006159 is a prime.

It is not a weakly prime, because it can be changed into another prime (40006193) 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, 20003081 + 20003082.

It is an arithmetic number, because the mean of its divisors is an integer number (20003082).

Almost surely, 2^40006163 is an apocalyptic number.

40006163 is a deficient number, since it is larger than the sum of its proper divisors (1).

40006163 is an equidigital number, since it uses as much as digits as its factorization.

40006163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 40006163 is about 6325.0425295013. The cubic root of 40006163 is about 342.0127527363.

Adding to 40006163 its reverse (36160004), we get a palindrome (76166167).

The spelling of 40006163 in words is "forty million, six thousand, one hundred sixty-three".