3649847 has 8 divisors (see below), whose sum is σ = 3932160. Its totient is φ = 3377880.

The previous prime is 3649831. The next prime is 3649871. The reversal of 3649847 is 7489463.

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 3649847 - 2⁴ = 3649831 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 (3649147) 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, 1847 + ... + 3272.

It is an arithmetic number, because the mean of its divisors is an integer number (491520).

Almost surely, 2^3649847 is an apocalyptic number.

3649847 is a deficient number, since it is larger than the sum of its proper divisors (282313).

3649847 is a wasteful number, since it uses less digits than its factorization.

3649847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5173.

The product of its digits is 145152, while the sum is 41.

The square root of 3649847 is about 1910.4572751046. The cubic root of 3649847 is about 153.9660210635.

The spelling of 3649847 in words is "three million, six hundred forty-nine thousand, eight hundred forty-seven".