3649549 has 2 divisors, whose sum is σ = 3649550. Its totient is φ = 3649548.

The previous prime is 3649531. The next prime is 3649559. The reversal of 3649549 is 9459463.

3649549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3087049 + 562500 = 1757^2 + 750^2 .

It is a cyclic number.

It is not a de Polignac number, because 3649549 - 2⁵ = 3649517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3649559) 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, 1824774 + 1824775.

It is an arithmetic number, because the mean of its divisors is an integer number (1824775).

Almost surely, 2^3649549 is an apocalyptic number.

It is an amenable number.

3649549 is a deficient number, since it is larger than the sum of its proper divisors (1).

3649549 is an equidigital number, since it uses as much as digits as its factorization.

3649549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 40.

The square root of 3649549 is about 1910.3792817135. The cubic root of 3649549 is about 153.9618306483.

The spelling of 3649549 in words is "three million, six hundred forty-nine thousand, five hundred forty-nine".