40943659 has 2 divisors, whose sum is σ = 40943660. Its totient is φ = 40943658.

The previous prime is 40943587. The next prime is 40943663. The reversal of 40943659 is 95634904.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40943659 - 2¹¹ = 40941611 is a prime.

It is not a weakly prime, because it can be changed into another prime (40943159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20471829 + 20471830.

It is an arithmetic number, because the mean of its divisors is an integer number (20471830).

Almost surely, 2^40943659 is an apocalyptic number.

40943659 is a deficient number, since it is larger than the sum of its proper divisors (1).

40943659 is an equidigital number, since it uses as much as digits as its factorization.

40943659 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 40.

The square root of 40943659 is about 6398.7232320206. The cubic root of 40943659 is about 344.6637036602.

The spelling of 40943659 in words is "forty million, nine hundred forty-three thousand, six hundred fifty-nine".