3878291 has 2 divisors, whose sum is σ = 3878292. Its totient is φ = 3878290.

The previous prime is 3878279. The next prime is 3878297. The reversal of 3878291 is 1928783.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3878291 - 2¹⁸ = 3616147 is a prime.

It is a super-2 number, since 2×3878291² = 30082282161362, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3878297) 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, 1939145 + 1939146.

It is an arithmetic number, because the mean of its divisors is an integer number (1939146).

Almost surely, 2^3878291 is an apocalyptic number.

3878291 is a deficient number, since it is larger than the sum of its proper divisors (1).

3878291 is an equidigital number, since it uses as much as digits as its factorization.

3878291 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 3878291 is about 1969.3377059306. The cubic root of 3878291 is about 157.1134857739.

The spelling of 3878291 in words is "three million, eight hundred seventy-eight thousand, two hundred ninety-one".