540444013 has 2 divisors, whose sum is σ = 540444014. Its totient is φ = 540444012.

The previous prime is 540443989. The next prime is 540444017. The reversal of 540444013 is 310444045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 538332804 + 2111209 = 23202^2 + 1453^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-540444013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540444017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270222006 + 270222007.

It is an arithmetic number, because the mean of its divisors is an integer number (270222007).

Almost surely, 2^540444013 is an apocalyptic number.

It is an amenable number.

540444013 is a deficient number, since it is larger than the sum of its proper divisors (1).

540444013 is an equidigital number, since it uses as much as digits as its factorization.

540444013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 540444013 is about 23247.4517528266. The cubic root of 540444013 is about 814.5484158167.

Adding to 540444013 its reverse (310444045), we get a palindrome (850888058).

The spelling of 540444013 in words is "five hundred forty million, four hundred forty-four thousand, thirteen".