539491 has 4 divisors (see below), whose sum is σ = 546400. Its totient is φ = 532584.

The previous prime is 539479. The next prime is 539501. The reversal of 539491 is 194935.

539491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 539491 - 2¹³ = 531299 is a prime.

It is the 735-th Hogben number.

It is a Duffinian number.

539491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (539401) by changing a digit.

It is a nontrivial repunit in base 734.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3336 + ... + 3493.

It is an arithmetic number, because the mean of its divisors is an integer number (136600).

2⁵³⁹⁴⁹¹ is an apocalyptic number.

539491 is a deficient number, since it is larger than the sum of its proper divisors (6909).

539491 is an equidigital number, since it uses as much as digits as its factorization.

539491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6908.

The product of its digits is 4860, while the sum is 31.

The square root of 539491 is about 734.5005105512. The cubic root of 539491 is about 81.4069345552.

The spelling of 539491 in words is "five hundred thirty-nine thousand, four hundred ninety-one".