43947380717 has 2 divisors, whose sum is σ = 43947380718. Its totient is φ = 43947380716.

The previous prime is 43947380713. The next prime is 43947380783. The reversal of 43947380717 is 71708374934.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41310969001 + 2636411716 = 203251^2 + 51346^2 .

It is a cyclic number.

It is not a de Polignac number, because 43947380717 - 2² = 43947380713 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43947380713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21973690358 + 21973690359.

It is an arithmetic number, because the mean of its divisors is an integer number (21973690359).

Almost surely, 2^43947380717 is an apocalyptic number.

It is an amenable number.

43947380717 is a deficient number, since it is larger than the sum of its proper divisors (1).

43947380717 is an equidigital number, since it uses as much as digits as its factorization.

43947380717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3556224, while the sum is 53.

The spelling of 43947380717 in words is "forty-three billion, nine hundred forty-seven million, three hundred eighty thousand, seven hundred seventeen".