3549321 has 6 divisors (see below), whose sum is σ = 5126810. Its totient is φ = 2366208.

The previous prime is 3549319. The next prime is 3549323. The reversal of 3549321 is 1239453.

It is an interprime number because it is at equal distance from previous prime (3549319) and next prime (3549323).

It can be written as a sum of positive squares in only one way, i.e., 2673225 + 876096 = 1635^2 + 936^2 .

It is not a de Polignac number, because 3549321 - 2¹ = 3549319 is a prime.

It is a super-2 number, since 2×3549321² = 25195359122082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3549323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197176 + ... + 197193.

Almost surely, 2^3549321 is an apocalyptic number.

It is an amenable number.

3549321 is a deficient number, since it is larger than the sum of its proper divisors (1577489).

3549321 is a wasteful number, since it uses less digits than its factorization.

3549321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394375 (or 394372 counting only the distinct ones).

The product of its digits is 3240, while the sum is 27.

The square root of 3549321 is about 1883.9641716338. The cubic root of 3549321 is about 152.5393036740.

The spelling of 3549321 in words is "three million, five hundred forty-nine thousand, three hundred twenty-one".