3878961 has 8 divisors (see below), whose sum is σ = 5213184. Its totient is φ = 2565360.

The previous prime is 3878947. The next prime is 3878981. The reversal of 3878961 is 1698783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3878961 - 2⁹ = 3878449 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3878921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4710 + ... + 5471.

It is an arithmetic number, because the mean of its divisors is an integer number (651648).

Almost surely, 2^3878961 is an apocalyptic number.

It is an amenable number.

3878961 is a deficient number, since it is larger than the sum of its proper divisors (1334223).

3878961 is a wasteful number, since it uses less digits than its factorization.

3878961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10311.

The product of its digits is 72576, while the sum is 42.

The square root of 3878961 is about 1969.5078065344. The cubic root of 3878961 is about 157.1225327118.

The spelling of 3878961 in words is "three million, eight hundred seventy-eight thousand, nine hundred sixty-one".