540398 has 8 divisors (see below), whose sum is σ = 853320. Its totient is φ = 255960.

The previous prime is 540391. The next prime is 540433. The reversal of 540398 is 893045.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 540398.

It is a congruent number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7073 + ... + 7148.

It is an arithmetic number, because the mean of its divisors is an integer number (106665).

2⁵⁴⁰³⁹⁸ is an apocalyptic number.

540398 is a deficient number, since it is larger than the sum of its proper divisors (312922).

540398 is a wasteful number, since it uses less digits than its factorization.

540398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14242.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 540398 is about 735.1176776544. The cubic root of 540398 is about 81.4525298479.

The spelling of 540398 in words is "five hundred forty thousand, three hundred ninety-eight".