540933209 has 2 divisors, whose sum is σ = 540933210. Its totient is φ = 540933208.

The previous prime is 540933121. The next prime is 540933233. The reversal of 540933209 is 902339045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 369715984 + 171217225 = 19228^2 + 13085^2 .

It is a cyclic number.

It is not a de Polignac number, because 540933209 - 2¹⁶ = 540867673 is a prime.

It is not a weakly prime, because it can be changed into another prime (540933709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270466604 + 270466605.

It is an arithmetic number, because the mean of its divisors is an integer number (270466605).

Almost surely, 2^540933209 is an apocalyptic number.

It is an amenable number.

540933209 is a deficient number, since it is larger than the sum of its proper divisors (1).

540933209 is an equidigital number, since it uses as much as digits as its factorization.

540933209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 540933209 is about 23257.9708702200. The cubic root of 540933209 is about 814.7941111143.

The spelling of 540933209 in words is "five hundred forty million, nine hundred thirty-three thousand, two hundred nine".