3556449 has 24 divisors (see below), whose sum is σ = 5601960. Its totient is φ = 2161152.

The previous prime is 3556447. The next prime is 3556457. The reversal of 3556449 is 9446553.

It is a happy number.

3556449 is a `hidden beast` number, since 3 + 5 + 5 + 644 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 518400 + 3038049 = 720^2 + 1743^2 .

It is not a de Polignac number, because 3556449 - 2¹ = 3556447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3556447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13087 + ... + 13355.

It is an arithmetic number, because the mean of its divisors is an integer number (233415).

Almost surely, 2^3556449 is an apocalyptic number.

3556449 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

3556449 is a deficient number, since it is larger than the sum of its proper divisors (2045511).

3556449 is a wasteful number, since it uses less digits than its factorization.

3556449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 398 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 3556449 is about 1885.8549785177. The cubic root of 3556449 is about 152.6413488354.

It can be divided in two parts, 3556 and 449, that added together give a triangular number (4005 = T₈₉).

The spelling of 3556449 in words is "three million, five hundred fifty-six thousand, four hundred forty-nine".