40066259 has 2 divisors, whose sum is σ = 40066260. Its totient is φ = 40066258.

The previous prime is 40066241. The next prime is 40066283. The reversal of 40066259 is 95266004.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40066259 is a prime.

It is a super-2 number, since 2×40066259² = 3210610220510162, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40062259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20033129 + 20033130.

It is an arithmetic number, because the mean of its divisors is an integer number (20033130).

Almost surely, 2^40066259 is an apocalyptic number.

40066259 is a deficient number, since it is larger than the sum of its proper divisors (1).

40066259 is an equidigital number, since it uses as much as digits as its factorization.

40066259 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 40066259 is about 6329.7913867678. The cubic root of 40066259 is about 342.1839206578.

The spelling of 40066259 in words is "forty million, sixty-six thousand, two hundred fifty-nine".