3878219 has 2 divisors, whose sum is σ = 3878220. Its totient is φ = 3878218.

The previous prime is 3878209. The next prime is 3878221. The reversal of 3878219 is 9128783.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3878219 is a prime.

It is a super-2 number, since 2×3878219² = 30081165223922, which contains 22 as substring.

Together with 3878221, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (3878209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1939109 + 1939110.

It is an arithmetic number, because the mean of its divisors is an integer number (1939110).

Almost surely, 2^3878219 is an apocalyptic number.

3878219 is a deficient number, since it is larger than the sum of its proper divisors (1).

3878219 is an equidigital number, since it uses as much as digits as its factorization.

3878219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 3878219 is about 1969.3194255884. The cubic root of 3878219 is about 157.1125135036.

The spelling of 3878219 in words is "three million, eight hundred seventy-eight thousand, two hundred nineteen".