540749 has 12 divisors (see below), whose sum is σ = 614460. Its totient is φ = 475200.

The previous prime is 540713. The next prime is 540751. The reversal of 540749 is 947045.

It can be written as a sum of positive squares in 2 ways, for example, as 174724 + 366025 = 418^2 + 605^2 .

It is a de Polignac number, because none of the positive numbers 2^k-540749 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 540749.

It is not an unprimeable number, because it can be changed into a prime (540769) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4907 + ... + 5015.

It is an arithmetic number, because the mean of its divisors is an integer number (51205).

2⁵⁴⁰⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

540749 is a deficient number, since it is larger than the sum of its proper divisors (73711).

540749 is a wasteful number, since it uses less digits than its factorization.

540749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 540749 is about 735.3563761878. The cubic root of 540749 is about 81.4701610816.

The spelling of 540749 in words is "five hundred forty thousand, seven hundred forty-nine".