3809649 has 8 divisors (see below), whose sum is σ = 5378400. Its totient is φ = 2390336.

The previous prime is 3809639. The next prime is 3809653. The reversal of 3809649 is 9469083.

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

It is not a de Polignac number, because 3809649 - 2⁹ = 3809137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3809639) 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, 37299 + ... + 37400.

It is an arithmetic number, because the mean of its divisors is an integer number (672300).

Almost surely, 2^3809649 is an apocalyptic number.

It is an amenable number.

3809649 is a deficient number, since it is larger than the sum of its proper divisors (1568751).

3809649 is a wasteful number, since it uses less digits than its factorization.

3809649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74719.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 3809649 is about 1951.8322161497. The cubic root of 3809649 is about 156.1810439195.

The spelling of 3809649 in words is "three million, eight hundred nine thousand, six hundred forty-nine".