540709249 has 8 divisors (see below), whose sum is σ = 544115880. Its totient is φ = 537309696.

The previous prime is 540709207. The next prime is 540709261. The reversal of 540709249 is 942907045.

It can be written as a sum of positive squares in 4 ways, for example, as 392040000 + 148669249 = 19800^2 + 12193^2 .

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 540709249 - 2¹¹ = 540707201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (540703249) 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, 285297 + ... + 287185.

It is an arithmetic number, because the mean of its divisors is an integer number (68014485).

Almost surely, 2^540709249 is an apocalyptic number.

It is an amenable number.

540709249 is a deficient number, since it is larger than the sum of its proper divisors (3406631).

540709249 is a wasteful number, since it uses less digits than its factorization.

540709249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3539.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 540709249 is about 23253.1556783160. The cubic root of 540709249 is about 814.6816471502.

The spelling of 540709249 in words is "five hundred forty million, seven hundred nine thousand, two hundred forty-nine".