3539423549 has 4 divisors (see below), whose sum is σ = 3557390364. Its totient is φ = 3521456736.

The previous prime is 3539423533. The next prime is 3539423567. The reversal of 3539423549 is 9453249353.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9453249353 = 82757 ⋅114229.

It can be written as a sum of positive squares in 2 ways, for example, as 3263265625 + 276157924 = 57125^2 + 16618^2 .

It is a cyclic number.

It is not a de Polignac number, because 3539423549 - 2⁴ = 3539423533 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3539423519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8983112 + ... + 8983505.

It is an arithmetic number, because the mean of its divisors is an integer number (889347591).

Almost surely, 2^3539423549 is an apocalyptic number.

It is an amenable number.

3539423549 is a deficient number, since it is larger than the sum of its proper divisors (17966815).

3539423549 is a wasteful number, since it uses less digits than its factorization.

3539423549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17966814.

The product of its digits is 1749600, while the sum is 47.

The square root of 3539423549 is about 59493.0546282505. The cubic root of 3539423549 is about 1523.9738396607.

The spelling of 3539423549 in words is "three billion, five hundred thirty-nine million, four hundred twenty-three thousand, five hundred forty-nine".