540469 has 2 divisors, whose sum is σ = 540470. Its totient is φ = 540468.

The previous prime is 540461. The next prime is 540509. The reversal of 540469 is 964045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 532900 + 7569 = 730^2 + 87^2 .

It is a cyclic number.

It is not a de Polignac number, because 540469 - 2³ = 540461 is a prime.

It is a super-2 number, since 2×540469² = 584213479922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540461) 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 as a sum of consecutive naturals, namely, 270234 + 270235.

It is an arithmetic number, because the mean of its divisors is an integer number (270235).

2⁵⁴⁰⁴⁶⁹ is an apocalyptic number.

It is an amenable number.

540469 is a deficient number, since it is larger than the sum of its proper divisors (1).

540469 is an equidigital number, since it uses as much as digits as its factorization.

540469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 540469 is about 735.1659676563. The cubic root of 540469 is about 81.4560968956.

The spelling of 540469 in words is "five hundred forty thousand, four hundred sixty-nine".