3870719989 has 2 divisors, whose sum is σ = 3870719990. Its totient is φ = 3870719988.

The previous prime is 3870719981. The next prime is 3870720001. The reversal of 3870719989 is 9899170783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3032154225 + 838565764 = 55065^2 + 28958^2 .

It is a cyclic number.

It is not a de Polignac number, because 3870719989 - 2³ = 3870719981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3870719981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1935359994 + 1935359995.

It is an arithmetic number, because the mean of its divisors is an integer number (1935359995).

Almost surely, 2^3870719989 is an apocalyptic number.

It is an amenable number.

3870719989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3870719989 is an equidigital number, since it uses as much as digits as its factorization.

3870719989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6858432, while the sum is 61.

The square root of 3870719989 is about 62215.1106163125. The cubic root of 3870719989 is about 1570.1118274032. Note that the first 3 decimals are identical.

The spelling of 3870719989 in words is "three billion, eight hundred seventy million, seven hundred nineteen thousand, nine hundred eighty-nine".