538493 has 4 divisors (see below), whose sum is σ = 547680. Its totient is φ = 529308.

The previous prime is 538487. The next prime is 538511. The reversal of 538493 is 394835.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538493 is a prime.

It is a super-2 number, since 2×538493² = 579949422098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538423) 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, 4505 + ... + 4622.

It is an arithmetic number, because the mean of its divisors is an integer number (136920).

2⁵³⁸⁴⁹³ is an apocalyptic number.

It is an amenable number.

538493 is a deficient number, since it is larger than the sum of its proper divisors (9187).

538493 is an equidigital number, since it uses as much as digits as its factorization.

538493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9186.

The product of its digits is 12960, while the sum is 32.

The square root of 538493 is about 733.8208228171. The cubic root of 538493 is about 81.3567055617.

The spelling of 538493 in words is "five hundred thirty-eight thousand, four hundred ninety-three".