3861938 has 4 divisors (see below), whose sum is σ = 5792910. Its totient is φ = 1930968.

The previous prime is 3861929. The next prime is 3861961. The reversal of 3861938 is 8391683.

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

It can be written as a sum of positive squares in only one way, i.e., 2380849 + 1481089 = 1543^2 + 1217^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 965483 + ... + 965486.

Almost surely, 2^3861938 is an apocalyptic number.

3861938 is a deficient number, since it is larger than the sum of its proper divisors (1930972).

3861938 is a wasteful number, since it uses less digits than its factorization.

3861938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930971.

The product of its digits is 31104, while the sum is 38.

The square root of 3861938 is about 1965.1814165618. The cubic root of 3861938 is about 156.8923491550.

The spelling of 3861938 in words is "three million, eight hundred sixty-one thousand, nine hundred thirty-eight".