3861911 has 2 divisors, whose sum is σ = 3861912. Its totient is φ = 3861910.

The previous prime is 3861899. The next prime is 3861929. The reversal of 3861911 is 1191683.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3861911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3861961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1930955 + 1930956.

It is an arithmetic number, because the mean of its divisors is an integer number (1930956).

Almost surely, 2^3861911 is an apocalyptic number.

3861911 is a deficient number, since it is larger than the sum of its proper divisors (1).

3861911 is an equidigital number, since it uses as much as digits as its factorization.

3861911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 29.

The square root of 3861911 is about 1965.1745469551. The cubic root of 3861911 is about 156.8919835266.

The spelling of 3861911 in words is "three million, eight hundred sixty-one thousand, nine hundred eleven".