538488869 has 2 divisors, whose sum is σ = 538488870. Its totient is φ = 538488868.

The previous prime is 538488833. The next prime is 538488877. The reversal of 538488869 is 968884835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 491730625 + 46758244 = 22175^2 + 6838^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538488869 is a prime.

It is a super-2 number, since 2×538488869² = 579940524073798322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538488809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269244434 + 269244435.

It is an arithmetic number, because the mean of its divisors is an integer number (269244435).

Almost surely, 2^538488869 is an apocalyptic number.

It is an amenable number.

538488869 is a deficient number, since it is larger than the sum of its proper divisors (1).

538488869 is an equidigital number, since it uses as much as digits as its factorization.

538488869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13271040, while the sum is 59.

The square root of 538488869 is about 23205.3629361835. The cubic root of 538488869 is about 813.5649752097.

The spelling of 538488869 in words is "five hundred thirty-eight million, four hundred eighty-eight thousand, eight hundred sixty-nine".