540405471 has 8 divisors (see below), whose sum is σ = 722214144. Its totient is φ = 359433560.

The previous prime is 540405457. The next prime is 540405491. The reversal of 540405471 is 174504045.

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

It is a cyclic number.

It is not a de Polignac number, because 540405471 - 2⁶ = 540405407 is a prime.

It is a super-3 number, since 3×540405471³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540405491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 207681 + ... + 210266.

It is an arithmetic number, because the mean of its divisors is an integer number (90276768).

Almost surely, 2^540405471 is an apocalyptic number.

540405471 is a deficient number, since it is larger than the sum of its proper divisors (181808673).

540405471 is a wasteful number, since it uses less digits than its factorization.

540405471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418381.

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 540405471 is about 23246.6227869770. The cubic root of 540405471 is about 814.5290520647.

The spelling of 540405471 in words is "five hundred forty million, four hundred five thousand, four hundred seventy-one".