3866938 has 4 divisors (see below), whose sum is σ = 5800410. Its totient is φ = 1933468.

The previous prime is 3866927. The next prime is 3866957. The reversal of 3866938 is 8396683.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8396683 = 661 ⋅12703.

It can be written as a sum of positive squares in only one way, i.e., 2036329 + 1830609 = 1427^2 + 1353^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3866894 and 3866903.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 966733 + ... + 966736.

Almost surely, 2^3866938 is an apocalyptic number.

3866938 is a deficient number, since it is larger than the sum of its proper divisors (1933472).

3866938 is a wasteful number, since it uses less digits than its factorization.

3866938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933471.

The product of its digits is 186624, while the sum is 43.

The square root of 3866938 is about 1966.4531522515. The cubic root of 3866938 is about 156.9600287712.

The spelling of 3866938 in words is "three million, eight hundred sixty-six thousand, nine hundred thirty-eight".