538439129 has 2 divisors, whose sum is σ = 538439130. Its totient is φ = 538439128.

The previous prime is 538439117. The next prime is 538439149. The reversal of 538439129 is 921934835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 401080729 + 137358400 = 20027^2 + 11720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538439129 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 538439129.

It is not a weakly prime, because it can be changed into another prime (538439149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269219564 + 269219565.

It is an arithmetic number, because the mean of its divisors is an integer number (269219565).

Almost surely, 2^538439129 is an apocalyptic number.

It is an amenable number.

538439129 is a deficient number, since it is larger than the sum of its proper divisors (1).

538439129 is an equidigital number, since it uses as much as digits as its factorization.

538439129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 44.

The square root of 538439129 is about 23204.2911764182. The cubic root of 538439129 is about 813.5399248820.

The spelling of 538439129 in words is "five hundred thirty-eight million, four hundred thirty-nine thousand, one hundred twenty-nine".