40470809129 has 2 divisors, whose sum is σ = 40470809130. Its totient is φ = 40470809128.

The previous prime is 40470809081. The next prime is 40470809167. The reversal of 40470809129 is 92190807404.

40470809129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40002000025 + 468809104 = 200005^2 + 21652^2 .

It is a cyclic number.

It is not a de Polignac number, because 40470809129 - 2³² = 36175841833 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40470809129.

It is not a weakly prime, because it can be changed into another prime (40470809629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20235404564 + 20235404565.

It is an arithmetic number, because the mean of its divisors is an integer number (20235404565).

Almost surely, 2^40470809129 is an apocalyptic number.

It is an amenable number.

40470809129 is a deficient number, since it is larger than the sum of its proper divisors (1).

40470809129 is an equidigital number, since it uses as much as digits as its factorization.

40470809129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 44.

The spelling of 40470809129 in words is "forty billion, four hundred seventy million, eight hundred nine thousand, one hundred twenty-nine".