3866138 has 8 divisors (see below), whose sum is σ = 5908788. Its totient is φ = 1896544.

The previous prime is 3866117. The next prime is 3866141. The reversal of 3866138 is 8316683.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3853369 + 12769 = 1963^2 + 113^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 3866098 and 3866107.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18131 + ... + 18342.

Almost surely, 2^3866138 is an apocalyptic number.

3866138 is a deficient number, since it is larger than the sum of its proper divisors (2042650).

3866138 is a wasteful number, since it uses less digits than its factorization.

3866138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36528.

The product of its digits is 20736, while the sum is 35.

The square root of 3866138 is about 1966.2497298156. The cubic root of 3866138 is about 156.9492039547.

It can be divided in two parts, 3866 and 138, that added together give a palindrome (4004).

The spelling of 3866138 in words is "three million, eight hundred sixty-six thousand, one hundred thirty-eight".