3879021 has 8 divisors (see below), whose sum is σ = 5444320. Its totient is φ = 2449872.

The previous prime is 3878993. The next prime is 3879023. The reversal of 3879021 is 1209783.

It is a happy number.

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

It is not a de Polignac number, because 3879021 - 2⁷ = 3878893 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3879021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3879023) 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, 33970 + ... + 34083.

It is an arithmetic number, because the mean of its divisors is an integer number (680540).

Almost surely, 2^3879021 is an apocalyptic number.

It is an amenable number.

3879021 is a deficient number, since it is larger than the sum of its proper divisors (1565299).

3879021 is a wasteful number, since it uses less digits than its factorization.

3879021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68075.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 3879021 is about 1969.5230387076. The cubic root of 3879021 is about 157.1233428345.

The spelling of 3879021 in words is "three million, eight hundred seventy-nine thousand, twenty-one".