3839920 has 40 divisors (see below), whose sum is σ = 10204704. Its totient is φ = 1316352.

The previous prime is 3839911. The next prime is 3839923. The reversal of 3839920 is 299383.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (3839923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2869 + ... + 3988.

Almost surely, 2^3839920 is an apocalyptic number.

It is an amenable number.

3839920 is an abundant number, since it is smaller than the sum of its proper divisors (6364784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3839920 is a wasteful number, since it uses less digits than its factorization.

3839920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6877 (or 6871 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 3839920 is about 1959.5713817057. The cubic root of 3839920 is about 156.5936181760.

The spelling of 3839920 in words is "three million, eight hundred thirty-nine thousand, nine hundred twenty".