3649884 has 24 divisors (see below), whose sum is σ = 9733248. Its totient is φ = 1042800.

The previous prime is 3649871. The next prime is 3649889. The reversal of 3649884 is 4889463.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649889) 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 7 ways as a sum of consecutive naturals, for example, 21642 + ... + 21809.

It is an arithmetic number, because the mean of its divisors is an integer number (405552).

Almost surely, 2^3649884 is an apocalyptic number.

It is an amenable number.

3649884 is an abundant number, since it is smaller than the sum of its proper divisors (6083364).

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

3649884 is a wasteful number, since it uses less digits than its factorization.

3649884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43465 (or 43463 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 3649884 is about 1910.4669586256. The cubic root of 3649884 is about 153.9665413341.

The spelling of 3649884 in words is "three million, six hundred forty-nine thousand, eight hundred eighty-four".