40691159 has 2 divisors, whose sum is σ = 40691160. Its totient is φ = 40691158.

The previous prime is 40691113. The next prime is 40691207. The reversal of 40691159 is 95119604.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40691159 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40691059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20345579 + 20345580.

It is an arithmetic number, because the mean of its divisors is an integer number (20345580).

Almost surely, 2^40691159 is an apocalyptic number.

40691159 is a deficient number, since it is larger than the sum of its proper divisors (1).

40691159 is an equidigital number, since it uses as much as digits as its factorization.

40691159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 40691159 is about 6378.9622196718. The cubic root of 40691159 is about 343.9537272129.

The spelling of 40691159 in words is "forty million, six hundred ninety-one thousand, one hundred fifty-nine".