540356009 has 4 divisors (see below), whose sum is σ = 557786880. Its totient is φ = 522925140.

The previous prime is 540355993. The next prime is 540356027. The reversal of 540356009 is 900653045.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 900653045 = 5 ⋅180130609.

It is a cyclic number.

It is not a de Polignac number, because 540356009 - 2⁴ = 540355993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540356059) 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 in 3 ways as a sum of consecutive naturals, for example, 8715389 + ... + 8715450.

It is an arithmetic number, because the mean of its divisors is an integer number (139446720).

Almost surely, 2^540356009 is an apocalyptic number.

It is an amenable number.

540356009 is a deficient number, since it is larger than the sum of its proper divisors (17430871).

540356009 is a wasteful number, since it uses less digits than its factorization.

540356009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17430870.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 540356009 is about 23245.5589091766. The cubic root of 540356009 is about 814.5042006847.

The spelling of 540356009 in words is "five hundred forty million, three hundred fifty-six thousand, nine".