3873939 has 4 divisors (see below), whose sum is σ = 5165256. Its totient is φ = 2582624.

The previous prime is 3873931. The next prime is 3873941. The reversal of 3873939 is 9393783.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3873939 - 2³ = 3873931 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 3873939.

It is not an unprimeable number, because it can be changed into a prime (3873931) 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, 645654 + ... + 645659.

It is an arithmetic number, because the mean of its divisors is an integer number (1291314).

Almost surely, 2^3873939 is an apocalyptic number.

3873939 is a deficient number, since it is larger than the sum of its proper divisors (1291317).

3873939 is a wasteful number, since it uses less digits than its factorization.

3873939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1291316.

The product of its digits is 122472, while the sum is 42.

The square root of 3873939 is about 1968.2324557836. The cubic root of 3873939 is about 157.0546958062.

The spelling of 3873939 in words is "three million, eight hundred seventy-three thousand, nine hundred thirty-nine".