540409785 has 16 divisors (see below), whose sum is σ = 865682880. Its totient is φ = 287876160.

The previous prime is 540409757. The next prime is 540409811. The reversal of 540409785 is 587904045.

It is not a de Polignac number, because 540409785 - 2⁶ = 540409721 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8086 + ... + 33855.

It is an arithmetic number, because the mean of its divisors is an integer number (54105180).

Almost surely, 2^540409785 is an apocalyptic number.

It is an amenable number.

540409785 is a deficient number, since it is larger than the sum of its proper divisors (325273095).

540409785 is a wasteful number, since it uses less digits than its factorization.

540409785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42808.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 540409785 is about 23246.7155744634. The cubic root of 540409785 is about 814.5312194922.

The spelling of 540409785 in words is "five hundred forty million, four hundred nine thousand, seven hundred eighty-five".