3866849 has 8 divisors (see below), whose sum is σ = 4447680. Its totient is φ = 3293136.

The previous prime is 3866839. The next prime is 3866857. The reversal of 3866849 is 9486683.

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

It is a de Polignac number, because none of the positive numbers 2^k-3866849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3866809) 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, 554 + ... + 2835.

It is an arithmetic number, because the mean of its divisors is an integer number (555960).

Almost surely, 2^3866849 is an apocalyptic number.

It is an amenable number.

3866849 is a deficient number, since it is larger than the sum of its proper divisors (580831).

3866849 is a wasteful number, since it uses less digits than its factorization.

3866849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3559.

The product of its digits is 248832, while the sum is 44.

The square root of 3866849 is about 1966.4305225459. The cubic root of 3866849 is about 156.9588245842.

The spelling of 3866849 in words is "three million, eight hundred sixty-six thousand, eight hundred forty-nine".