540793709 has 4 divisors (see below), whose sum is σ = 548201916. Its totient is φ = 533385504.

The previous prime is 540793697. The next prime is 540793717. The reversal of 540793709 is 907397045.

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 146652100 + 394141609 = 12110^2 + 19853^2 .

It is a cyclic number.

It is not a de Polignac number, because 540793709 - 2²⁸ = 272358253 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 540793709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540790709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3703994 + ... + 3704139.

It is an arithmetic number, because the mean of its divisors is an integer number (137050479).

Almost surely, 2^540793709 is an apocalyptic number.

It is an amenable number.

540793709 is a deficient number, since it is larger than the sum of its proper divisors (7408207).

540793709 is an equidigital number, since it uses as much as digits as its factorization.

540793709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7408206.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 540793709 is about 23254.9717049925. The cubic root of 540793709 is about 814.7240633099.

The spelling of 540793709 in words is "five hundred forty million, seven hundred ninety-three thousand, seven hundred nine".