3921141 has 16 divisors (see below), whose sum is σ = 6075008. Its totient is φ = 2203200.

The previous prime is 3921139. The next prime is 3921143. The reversal of 3921141 is 1411293.

It is an interprime number because it is at equal distance from previous prime (3921139) and next prime (3921143).

It is not a de Polignac number, because 3921141 - 2¹ = 3921139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3921143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250 + ... + 2811.

It is an arithmetic number, because the mean of its divisors is an integer number (379688).

Almost surely, 2^3921141 is an apocalyptic number.

It is an amenable number.

3921141 is a deficient number, since it is larger than the sum of its proper divisors (2153867).

3921141 is a wasteful number, since it uses less digits than its factorization.

3921141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3132.

The product of its digits is 216, while the sum is 21.

The square root of 3921141 is about 1980.1871123709. The cubic root of 3921141 is about 157.6899999784.

The spelling of 3921141 in words is "three million, nine hundred twenty-one thousand, one hundred forty-one".