40938187 has 2 divisors, whose sum is σ = 40938188. Its totient is φ = 40938186.

The previous prime is 40938167. The next prime is 40938199. The reversal of 40938187 is 78183904.

40938187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40938187 - 2⁷ = 40938059 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40938167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20469093 + 20469094.

It is an arithmetic number, because the mean of its divisors is an integer number (20469094).

Almost surely, 2^40938187 is an apocalyptic number.

40938187 is a deficient number, since it is larger than the sum of its proper divisors (1).

40938187 is an equidigital number, since it uses as much as digits as its factorization.

40938187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 40938187 is about 6398.2956324321. The cubic root of 40938187 is about 344.6483485449.

It can be divided in two parts, 4093 and 8187, that multiplied together give a triangular number (33509391 = T₈₁₈₆).

The spelling of 40938187 in words is "forty million, nine hundred thirty-eight thousand, one hundred eighty-seven".