3859021867 has 2 divisors, whose sum is σ = 3859021868. Its totient is φ = 3859021866.

The previous prime is 3859021861. The next prime is 3859021877. The reversal of 3859021867 is 7681209583.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3859021867 - 2⁷ = 3859021739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3859021867.

It is not a weakly prime, because it can be changed into another prime (3859021861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1929510933 + 1929510934.

It is an arithmetic number, because the mean of its divisors is an integer number (1929510934).

Almost surely, 2^3859021867 is an apocalyptic number.

3859021867 is a deficient number, since it is larger than the sum of its proper divisors (1).

3859021867 is an equidigital number, since it uses as much as digits as its factorization.

3859021867 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 3859021867 is about 62121.0259654491. The cubic root of 3859021867 is about 1568.5284962898.

The spelling of 3859021867 in words is "three billion, eight hundred fifty-nine million, twenty-one thousand, eight hundred sixty-seven".