538256439 has 12 divisors (see below), whose sum is σ = 888550416. Its totient is φ = 307575072.

The previous prime is 538256387. The next prime is 538256449. The reversal of 538256439 is 934652835.

538256439 is a `hidden beast` number, since 5 + 3 + 82 + 564 + 3 + 9 = 666.

It is not a de Polignac number, because 538256439 - 2⁷ = 538256311 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 538256394 and 538256403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538256449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4271814 + ... + 4271939.

It is an arithmetic number, because the mean of its divisors is an integer number (74045868).

Almost surely, 2^538256439 is an apocalyptic number.

538256439 is a deficient number, since it is larger than the sum of its proper divisors (350293977).

538256439 is a wasteful number, since it uses less digits than its factorization.

538256439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8543766 (or 8543763 counting only the distinct ones).

The product of its digits is 777600, while the sum is 45.

The square root of 538256439 is about 23200.3542860880. The cubic root of 538256439 is about 813.4479043153.

The spelling of 538256439 in words is "five hundred thirty-eight million, two hundred fifty-six thousand, four hundred thirty-nine".