3649709 has 8 divisors (see below), whose sum is σ = 4352640. Its totient is φ = 2992176.

The previous prime is 3649699. The next prime is 3649741. The reversal of 3649709 is 9079463.

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 3649709 - 2⁴ = 3649693 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 (3649609) 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, 11174 + ... + 11495.

It is an arithmetic number, because the mean of its divisors is an integer number (544080).

Almost surely, 2^3649709 is an apocalyptic number.

It is an amenable number.

3649709 is a deficient number, since it is larger than the sum of its proper divisors (702931).

3649709 is a wasteful number, since it uses less digits than its factorization.

3649709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22699.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 3649709 is about 1910.4211577555. The cubic root of 3649709 is about 153.9640805641.

The spelling of 3649709 in words is "three million, six hundred forty-nine thousand, seven hundred nine".