3866212 has 12 divisors (see below), whose sum is σ = 7732480. Its totient is φ = 1656936.

The previous prime is 3866201. The next prime is 3866237. The reversal of 3866212 is 2126683.

3866212 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 138079 = 3866212 / (3 + 8 + 6 + 6 + 2 + 1 + 2).

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, 69012 + ... + 69067.

Almost surely, 2^3866212 is an apocalyptic number.

It is an amenable number.

3866212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3866212 is a wasteful number, since it uses less digits than its factorization.

3866212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138090 (or 138088 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 3866212 is about 1966.2685472743. The cubic root of 3866212 is about 156.9502053129.

The spelling of 3866212 in words is "three million, eight hundred sixty-six thousand, two hundred twelve".