3857938 has 16 divisors (see below), whose sum is σ = 6647040. Its totient is φ = 1645056.

The previous prime is 3857921. The next prime is 3857941. The reversal of 3857938 is 8397583.

It is a happy number.

It is a super-2 number, since 2×3857938² = 29767371223688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3857894 and 3857903.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2770 + ... + 3922.

It is an arithmetic number, because the mean of its divisors is an integer number (415440).

Almost surely, 2^3857938 is an apocalyptic number.

3857938 is a deficient number, since it is larger than the sum of its proper divisors (2789102).

3857938 is a wasteful number, since it uses less digits than its factorization.

3857938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401.

The product of its digits is 181440, while the sum is 43.

The square root of 3857938 is about 1964.1634351550. The cubic root of 3857938 is about 156.8381633905.

The spelling of 3857938 in words is "three million, eight hundred fifty-seven thousand, nine hundred thirty-eight".