3861822 has 16 divisors (see below), whose sum is σ = 8178192. Its totient is φ = 1211520.

The previous prime is 3861821. The next prime is 3861841. The reversal of 3861822 is 2281683.

3861822 = 204² + 205² + ... + 271².

It is a self number, because there is not a number n which added to its sum of digits gives 3861822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3861821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18829 + ... + 19032.

It is an arithmetic number, because the mean of its divisors is an integer number (511137).

Almost surely, 2^3861822 is an apocalyptic number.

3861822 is an abundant number, since it is smaller than the sum of its proper divisors (4316370).

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

3861822 is a wasteful number, since it uses less digits than its factorization.

3861822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37883.

The product of its digits is 4608, while the sum is 30.

The square root of 3861822 is about 1965.1519025256. The cubic root of 3861822 is about 156.8907782948.

The spelling of 3861822 in words is "three million, eight hundred sixty-one thousand, eight hundred twenty-two".