538505899 has 4 divisors (see below), whose sum is σ = 551029336. Its totient is φ = 525982464.

The previous prime is 538505897. The next prime is 538505911. The reversal of 538505899 is 998505835.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 538505899 - 2¹ = 538505897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538505897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6261654 + ... + 6261739.

It is an arithmetic number, because the mean of its divisors is an integer number (137757334).

Almost surely, 2^538505899 is an apocalyptic number.

538505899 is a deficient number, since it is larger than the sum of its proper divisors (12523437).

538505899 is a wasteful number, since it uses less digits than its factorization.

538505899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12523436.

The product of its (nonzero) digits is 1944000, while the sum is 52.

The square root of 538505899 is about 23205.7298743220. The cubic root of 538505899 is about 813.5735515959.

The spelling of 538505899 in words is "five hundred thirty-eight million, five hundred five thousand, eight hundred ninety-nine".