3849643 has 4 divisors (see below), whose sum is σ = 4399600. Its totient is φ = 3299688.

The previous prime is 3849617. The next prime is 3849653. The reversal of 3849643 is 3469483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3469483 = 83 ⋅41801.

It is a de Polignac number, because none of the positive numbers 2^k-3849643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3849653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274968 + ... + 274981.

It is an arithmetic number, because the mean of its divisors is an integer number (1099900).

Almost surely, 2^3849643 is an apocalyptic number.

3849643 is a deficient number, since it is larger than the sum of its proper divisors (549957).

3849643 is an equidigital number, since it uses as much as digits as its factorization.

3849643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549956.

The product of its digits is 62208, while the sum is 37.

The square root of 3849643 is about 1962.0507129022. The cubic root of 3849643 is about 156.7256761764.

The spelling of 3849643 in words is "three million, eight hundred forty-nine thousand, six hundred forty-three".