538712387 has 4 divisors (see below), whose sum is σ = 539245200. Its totient is φ = 538179576.

The previous prime is 538712347. The next prime is 538712393. The reversal of 538712387 is 783217835.

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 538712387 - 2⁸ = 538712131 is a prime.

It is a super-2 number, since 2×538712387² = 580422071814475538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (538712347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264887 + ... + 266912.

It is an arithmetic number, because the mean of its divisors is an integer number (134811300).

Almost surely, 2^538712387 is an apocalyptic number.

538712387 is a deficient number, since it is larger than the sum of its proper divisors (532813).

538712387 is a wasteful number, since it uses less digits than its factorization.

538712387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532812.

The product of its digits is 282240, while the sum is 44.

The square root of 538712387 is about 23210.1785215022. The cubic root of 538712387 is about 813.6775255160.

The spelling of 538712387 in words is "five hundred thirty-eight million, seven hundred twelve thousand, three hundred eighty-seven".