540604397 has 16 divisors (see below), whose sum is σ = 595378560. Its totient is φ = 488581632.

The previous prime is 540604343. The next prime is 540604409. The reversal of 540604397 is 793406045.

It is a cyclic number.

It is not a de Polignac number, because 540604397 - 2¹⁰ = 540603373 is a prime.

It is a super-2 number, since 2×540604397² = 584506228111467218, which contains 22 as substring.

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 540604397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540604327) 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 15 ways as a sum of consecutive naturals, for example, 187793 + ... + 190649.

It is an arithmetic number, because the mean of its divisors is an integer number (37211160).

Almost surely, 2^540604397 is an apocalyptic number.

It is an amenable number.

540604397 is a deficient number, since it is larger than the sum of its proper divisors (54774163).

540604397 is a wasteful number, since it uses less digits than its factorization.

540604397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3332.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 540604397 is about 23250.9009932949. The cubic root of 540604397 is about 814.6289838983.

The spelling of 540604397 in words is "five hundred forty million, six hundred four thousand, three hundred ninety-seven".