3861812 has 6 divisors (see below), whose sum is σ = 6758178. Its totient is φ = 1930904.

The previous prime is 3861811. The next prime is 3861817. The reversal of 3861812 is 2181683.

It can be written as a sum of positive squares in only one way, i.e., 3587236 + 274576 = 1894^2 + 524^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3861811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 482723 + ... + 482730.

It is an arithmetic number, because the mean of its divisors is an integer number (1126363).

Almost surely, 2^3861812 is an apocalyptic number.

It is an amenable number.

3861812 is a deficient number, since it is larger than the sum of its proper divisors (2896366).

3861812 is a wasteful number, since it uses less digits than its factorization.

3861812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965457 (or 965455 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 3861812 is about 1965.1493581914. The cubic root of 3861812 is about 156.8906428743.

The spelling of 3861812 in words is "three million, eight hundred sixty-one thousand, eight hundred twelve".