3549440 has 72 divisors (see below), whose sum is σ = 8830080. Its totient is φ = 1366016.

The previous prime is 3549437. The next prime is 3549457. The reversal of 3549440 is 449453.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60131 + ... + 60189.

It is an arithmetic number, because the mean of its divisors is an integer number (122640).

Almost surely, 2^3549440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3549440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4415040).

3549440 is an abundant number, since it is smaller than the sum of its proper divisors (5280640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3549440 is an equidigital number, since it uses as much as digits as its factorization.

3549440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 3549440 is about 1883.9957537107. The cubic root of 3549440 is about 152.5410084108.

The spelling of 3549440 in words is "three million, five hundred forty-nine thousand, four hundred forty".