3878417 has 4 divisors (see below), whose sum is σ = 3931620. Its totient is φ = 3825216.

The previous prime is 3878401. The next prime is 3878423. The reversal of 3878417 is 7148783.

3878417 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7148783 = 241 ⋅29663.

It can be written as a sum of positive squares in 2 ways, for example, as 2876416 + 1002001 = 1696^2 + 1001^2 .

It is a cyclic number.

It is not a de Polignac number, because 3878417 - 2⁴ = 3878401 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3878447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26492 + ... + 26637.

It is an arithmetic number, because the mean of its divisors is an integer number (982905).

Almost surely, 2^3878417 is an apocalyptic number.

It is an amenable number.

3878417 is a deficient number, since it is larger than the sum of its proper divisors (53203).

3878417 is an equidigital number, since it uses as much as digits as its factorization.

3878417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53202.

The product of its digits is 37632, while the sum is 38.

The square root of 3878417 is about 1969.3696961211. The cubic root of 3878417 is about 157.1151872179.

The spelling of 3878417 in words is "three million, eight hundred seventy-eight thousand, four hundred seventeen".