3861899 has 2 divisors, whose sum is σ = 3861900. Its totient is φ = 3861898.

The previous prime is 3861889. The next prime is 3861911. The reversal of 3861899 is 9981683.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3861899 - 2¹² = 3857803 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3861889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1930949 + 1930950.

It is an arithmetic number, because the mean of its divisors is an integer number (1930950).

Almost surely, 2^3861899 is an apocalyptic number.

3861899 is a deficient number, since it is larger than the sum of its proper divisors (1).

3861899 is an equidigital number, since it uses as much as digits as its factorization.

3861899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 44.

The square root of 3861899 is about 1965.1714937888. The cubic root of 3861899 is about 156.8918210245.

The spelling of 3861899 in words is "three million, eight hundred sixty-one thousand, eight hundred ninety-nine".