3549659 has 4 divisors (see below), whose sum is σ = 3704016. Its totient is φ = 3395304.

The previous prime is 3549649. The next prime is 3549673. The reversal of 3549659 is 9569453.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9569453 = 17 ⋅562909.

It is a cyclic number.

It is not a de Polignac number, because 3549659 - 2¹⁶ = 3484123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3549619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77144 + ... + 77189.

It is an arithmetic number, because the mean of its divisors is an integer number (926004).

Almost surely, 2^3549659 is an apocalyptic number.

3549659 is a deficient number, since it is larger than the sum of its proper divisors (154357).

3549659 is a wasteful number, since it uses less digits than its factorization.

3549659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154356.

The product of its digits is 145800, while the sum is 41.

The square root of 3549659 is about 1884.0538739643. The cubic root of 3549659 is about 152.5441455999.

It can be divided in two parts, 35 and 49659, that added together give a palindrome (49694).

The spelling of 3549659 in words is "three million, five hundred forty-nine thousand, six hundred fifty-nine".