40158841 has 2 divisors, whose sum is σ = 40158842. Its totient is φ = 40158840.

The previous prime is 40158827. The next prime is 40158869. The reversal of 40158841 is 14885104.

40158841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27342441 + 12816400 = 5229^2 + 3580^2 .

It is a cyclic number.

It is not a de Polignac number, because 40158841 - 2⁹ = 40158329 is a prime.

It is a super-2 number, since 2×40158841² = 3225465020926562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40158941) 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, 20079420 + 20079421.

It is an arithmetic number, because the mean of its divisors is an integer number (20079421).

Almost surely, 2^40158841 is an apocalyptic number.

It is an amenable number.

40158841 is a deficient number, since it is larger than the sum of its proper divisors (1).

40158841 is an equidigital number, since it uses as much as digits as its factorization.

40158841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5120, while the sum is 31.

The square root of 40158841 is about 6337.1003621530. The cubic root of 40158841 is about 342.4472819210.

The spelling of 40158841 in words is "forty million, one hundred fifty-eight thousand, eight hundred forty-one".