3649849 has 8 divisors (see below), whose sum is σ = 4416768. Its totient is φ = 2944320.

The previous prime is 3649831. The next prime is 3649871. The reversal of 3649849 is 9489463.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3649849 - 2⁹ = 3649337 is a prime.

It is a Duffinian number.

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, 15217 + ... + 15454.

It is an arithmetic number, because the mean of its divisors is an integer number (552096).

Almost surely, 2^3649849 is an apocalyptic number.

It is an amenable number.

3649849 is a deficient number, since it is larger than the sum of its proper divisors (766919).

3649849 is a wasteful number, since it uses less digits than its factorization.

3649849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30695.

The product of its digits is 186624, while the sum is 43.

The square root of 3649849 is about 1910.4577985394. The cubic root of 3649849 is about 153.9660491864.

The spelling of 3649849 in words is "three million, six hundred forty-nine thousand, eight hundred forty-nine".