3840847 has 6 divisors (see below), whose sum is σ = 3978728. Its totient is φ = 3707592.

The previous prime is 3840829. The next prime is 3840853. The reversal of 3840847 is 7480483.

It is not a de Polignac number, because 3840847 - 2⁷ = 3840719 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3840547) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1443 + ... + 3124.

Almost surely, 2^3840847 is an apocalyptic number.

3840847 is a deficient number, since it is larger than the sum of its proper divisors (137881).

3840847 is an equidigital number, since it uses as much as digits as its factorization.

3840847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4625 (or 4596 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 3840847 is about 1959.8078987493. The cubic root of 3840847 is about 156.6062183173.

The spelling of 3840847 in words is "three million, eight hundred forty thousand, eight hundred forty-seven".