3929841 has 6 divisors (see below), whose sum is σ = 5676450. Its totient is φ = 2619888.

The previous prime is 3929833. The next prime is 3929843. The reversal of 3929841 is 1489293.

It can be written as a sum of positive squares in only one way, i.e., 2187441 + 1742400 = 1479^2 + 1320^2 .

It is not a de Polignac number, because 3929841 - 2³ = 3929833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3929796 and 3929805.

It is not an unprimeable number, because it can be changed into a prime (3929843) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 218316 + ... + 218333.

It is an arithmetic number, because the mean of its divisors is an integer number (946075).

Almost surely, 2^3929841 is an apocalyptic number.

It is an amenable number.

3929841 is a deficient number, since it is larger than the sum of its proper divisors (1746609).

3929841 is a wasteful number, since it uses less digits than its factorization.

3929841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436655 (or 436652 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 3929841 is about 1982.3826573091. The cubic root of 3929841 is about 157.8065383037.

The spelling of 3929841 in words is "three million, nine hundred twenty-nine thousand, eight hundred forty-one".