3893421 has 8 divisors (see below), whose sum is σ = 5932864. Its totient is φ = 2224800.

The previous prime is 3893419. The next prime is 3893431. The reversal of 3893421 is 1243983.

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

It is not a de Polignac number, because 3893421 - 2¹ = 3893419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3893431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92680 + ... + 92721.

It is an arithmetic number, because the mean of its divisors is an integer number (741608).

Almost surely, 2^3893421 is an apocalyptic number.

It is an amenable number.

3893421 is a deficient number, since it is larger than the sum of its proper divisors (2039443).

3893421 is a wasteful number, since it uses less digits than its factorization.

3893421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185411.

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

The square root of 3893421 is about 1973.1753596678. The cubic root of 3893421 is about 157.3175311901.

The spelling of 3893421 in words is "three million, eight hundred ninety-three thousand, four hundred twenty-one".