539955109 has 2 divisors, whose sum is σ = 539955110. Its totient is φ = 539955108.

The previous prime is 539955049. The next prime is 539955113. The reversal of 539955109 is 901559935.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 407636100 + 132319009 = 20190^2 + 11503^2 .

It is a cyclic number.

It is not a de Polignac number, because 539955109 - 2¹⁷ = 539824037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (539955709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269977554 + 269977555.

It is an arithmetic number, because the mean of its divisors is an integer number (269977555).

Almost surely, 2^539955109 is an apocalyptic number.

It is an amenable number.

539955109 is a deficient number, since it is larger than the sum of its proper divisors (1).

539955109 is an equidigital number, since it uses as much as digits as its factorization.

539955109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 273375, while the sum is 46.

The square root of 539955109 is about 23236.9341566395. The cubic root of 539955109 is about 814.3027189974.

The spelling of 539955109 in words is "five hundred thirty-nine million, nine hundred fifty-five thousand, one hundred nine".