540086978 has 6 divisors (see below), whose sum is σ = 810179769. Its totient is φ = 270027056.

The previous prime is 540086959. The next prime is 540086993. The reversal of 540086978 is 879680045.

It can be written as a sum of positive squares in 2 ways, for example, as 328588129 + 211498849 = 18127^2 + 14543^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=16433.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 24650 + ... + 41082.

Almost surely, 2^540086978 is an apocalyptic number.

540086978 is a deficient number, since it is larger than the sum of its proper divisors (270092791).

540086978 is an frugal number, since it uses more digits than its factorization.

540086978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32868 (or 16435 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 540086978 is about 23239.7714704771. The cubic root of 540086978 is about 814.3690038564.

The spelling of 540086978 in words is "five hundred forty million, eighty-six thousand, nine hundred seventy-eight".