40217453239 has 2 divisors, whose sum is σ = 40217453240. Its totient is φ = 40217453238.

The previous prime is 40217453201. The next prime is 40217453281. The reversal of 40217453239 is 93235471204.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40217453239 is a prime.

It is a super-2 number, since 2×40217453239² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40217454239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20108726619 + 20108726620.

It is an arithmetic number, because the mean of its divisors is an integer number (20108726620).

Almost surely, 2^40217453239 is an apocalyptic number.

40217453239 is a deficient number, since it is larger than the sum of its proper divisors (1).

40217453239 is an equidigital number, since it uses as much as digits as its factorization.

40217453239 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 40217453239 in words is "forty billion, two hundred seventeen million, four hundred fifty-three thousand, two hundred thirty-nine".