3878999 has 8 divisors (see below), whose sum is σ = 4034688. Its totient is φ = 3725280.

The previous prime is 3878993. The next prime is 3879023. The reversal of 3878999 is 9998783.

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

It is a cyclic number.

It is not a de Polignac number, because 3878999 - 2¹⁶ = 3813463 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3878999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3878993) 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, 4469 + ... + 5265.

It is an arithmetic number, because the mean of its divisors is an integer number (504336).

Almost surely, 2^3878999 is an apocalyptic number.

3878999 is a deficient number, since it is larger than the sum of its proper divisors (155689).

3878999 is a wasteful number, since it uses less digits than its factorization.

3878999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985.

The product of its digits is 979776, while the sum is 53.

The square root of 3878999 is about 1969.5174535911. The cubic root of 3878999 is about 157.1230457905.

The spelling of 3878999 in words is "three million, eight hundred seventy-eight thousand, nine hundred ninety-nine".