540943659 has 24 divisors (see below), whose sum is σ = 791663600. Its totient is φ = 355907520.

The previous prime is 540943649. The next prime is 540943747. The reversal of 540943659 is 956349045.

540943659 is a `hidden beast` number, since 540 + 9 + 43 + 65 + 9 = 666.

It is not a de Polignac number, because 540943659 - 2⁷ = 540943531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540943609) 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 23 ways as a sum of consecutive naturals, for example, 225237 + ... + 227625.

Almost surely, 2^540943659 is an apocalyptic number.

540943659 is a deficient number, since it is larger than the sum of its proper divisors (250719941).

540943659 is a wasteful number, since it uses less digits than its factorization.

540943659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2715 (or 2712 counting only the distinct ones).

The product of its (nonzero) digits is 583200, while the sum is 45.

The square root of 540943659 is about 23258.1955232989. The cubic root of 540943659 is about 814.7993579380.

The spelling of 540943659 in words is "five hundred forty million, nine hundred forty-three thousand, six hundred fifty-nine".