540394 has 8 divisors (see below), whose sum is σ = 816228. Its totient is φ = 268320.

The previous prime is 540391. The next prime is 540433. The reversal of 540394 is 493045.

It can be written as a sum of positive squares in 2 ways, for example, as 540225 + 169 = 735^2 + 13^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (540391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547 + ... + 1174.

2⁵⁴⁰³⁹⁴ is an apocalyptic number.

540394 is a deficient number, since it is larger than the sum of its proper divisors (275834).

540394 is a wasteful number, since it uses less digits than its factorization.

540394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 540394 is about 735.1149569965. The cubic root of 540394 is about 81.4523288782.

The spelling of 540394 in words is "five hundred forty thousand, three hundred ninety-four".