3998141 has 4 divisors (see below), whose sum is σ = 4569312. Its totient is φ = 3426972.

The previous prime is 3998131. The next prime is 3998171. The reversal of 3998141 is 1418993.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1418993 = 67 ⋅21179.

It is a cyclic number.

It is not a de Polignac number, because 3998141 - 2¹⁰ = 3997117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3998131) 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, 285575 + ... + 285588.

It is an arithmetic number, because the mean of its divisors is an integer number (1142328).

Almost surely, 2^3998141 is an apocalyptic number.

It is an amenable number.

3998141 is a deficient number, since it is larger than the sum of its proper divisors (571171).

3998141 is an equidigital number, since it uses as much as digits as its factorization.

3998141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571170.

The product of its digits is 7776, while the sum is 35.

The square root of 3998141 is about 1999.5351959893. The cubic root of 3998141 is about 158.7155098982.

The spelling of 3998141 in words is "three million, nine hundred ninety-eight thousand, one hundred forty-one".