539909213 has 4 divisors (see below), whose sum is σ = 540129660. Its totient is φ = 539688768.

The previous prime is 539909189. The next prime is 539909243. The reversal of 539909213 is 312909935.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 406344964 + 133564249 = 20158^2 + 11557^2 .

It is a cyclic number.

It is not a de Polignac number, because 539909213 - 2¹⁰ = 539908189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539909243) 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, 106508 + ... + 111461.

It is an arithmetic number, because the mean of its divisors is an integer number (135032415).

Almost surely, 2^539909213 is an apocalyptic number.

It is an amenable number.

539909213 is a deficient number, since it is larger than the sum of its proper divisors (220447).

539909213 is a wasteful number, since it uses less digits than its factorization.

539909213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220446.

The product of its (nonzero) digits is 65610, while the sum is 41.

The square root of 539909213 is about 23235.9465699162. The cubic root of 539909213 is about 814.2796465259.

The spelling of 539909213 in words is "five hundred thirty-nine million, nine hundred nine thousand, two hundred thirteen".