3878843 has 2 divisors, whose sum is σ = 3878844. Its totient is φ = 3878842.

The previous prime is 3878783. The next prime is 3878867. The reversal of 3878843 is 3488783.

It is a strong prime.

It is an emirp because it is prime and its reverse (3488783) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3878843 - 2¹² = 3874747 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3878843.

It is not a weakly prime, because it can be changed into another prime (3878893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1939421 + 1939422.

It is an arithmetic number, because the mean of its divisors is an integer number (1939422).

Almost surely, 2^3878843 is an apocalyptic number.

3878843 is a deficient number, since it is larger than the sum of its proper divisors (1).

3878843 is an equidigital number, since it uses as much as digits as its factorization.

3878843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 41.

The square root of 3878843 is about 1969.4778495835. The cubic root of 3878843 is about 157.1209394461.

The spelling of 3878843 in words is "three million, eight hundred seventy-eight thousand, eight hundred forty-three".