40366243 has 2 divisors, whose sum is σ = 40366244. Its totient is φ = 40366242.

The previous prime is 40366171. The next prime is 40366267. The reversal of 40366243 is 34266304.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40366243 - 2¹⁷ = 40235171 is a prime.

It is not a weakly prime, because it can be changed into another prime (40366273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20183121 + 20183122.

It is an arithmetic number, because the mean of its divisors is an integer number (20183122).

Almost surely, 2^40366243 is an apocalyptic number.

40366243 is a deficient number, since it is larger than the sum of its proper divisors (1).

40366243 is an equidigital number, since it uses as much as digits as its factorization.

40366243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 40366243 is about 6353.4433970879. The cubic root of 40366243 is about 343.0357976731.

The spelling of 40366243 in words is "forty million, three hundred sixty-six thousand, two hundred forty-three".