3839421 has 4 divisors (see below), whose sum is σ = 5119232. Its totient is φ = 2559612.

The previous prime is 3839419. The next prime is 3839449. The reversal of 3839421 is 1249383.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3839421 - 2¹ = 3839419 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3839471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639901 + ... + 639906.

It is an arithmetic number, because the mean of its divisors is an integer number (1279808).

Almost surely, 2^3839421 is an apocalyptic number.

It is an amenable number.

3839421 is a deficient number, since it is larger than the sum of its proper divisors (1279811).

3839421 is a wasteful number, since it uses less digits than its factorization.

3839421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279810.

The product of its digits is 5184, while the sum is 30.

The square root of 3839421 is about 1959.4440538071. Note that the first 3 decimals coincide. The cubic root of 3839421 is about 156.5868347360.

The spelling of 3839421 in words is "three million, eight hundred thirty-nine thousand, four hundred twenty-one".