3649212209 has 8 divisors (see below), whose sum is σ = 3782870208. Its totient is φ = 3517398000.

The previous prime is 3649212191. The next prime is 3649212221. The reversal of 3649212209 is 9022129463.

It is a happy number.

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 3649212209 - 2¹² = 3649208113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3649212239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456917 + ... + 464834.

It is an arithmetic number, because the mean of its divisors is an integer number (472858776).

Almost surely, 2^3649212209 is an apocalyptic number.

It is an amenable number.

3649212209 is a deficient number, since it is larger than the sum of its proper divisors (133657999).

3649212209 is a wasteful number, since it uses less digits than its factorization.

3649212209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921895.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 3649212209 is about 60408.7097114315. The cubic root of 3649212209 is about 1539.5709448742.

The spelling of 3649212209 in words is "three billion, six hundred forty-nine million, two hundred twelve thousand, two hundred nine".