3986902489 has 2 divisors, whose sum is σ = 3986902490. Its totient is φ = 3986902488.

The previous prime is 3986902463. The next prime is 3986902561. The reversal of 3986902489 is 9842096893.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2165320089 + 1821582400 = 46533^2 + 42680^2 .

It is a cyclic number.

It is not a de Polignac number, because 3986902489 - 2⁵ = 3986902457 is a prime.

It is not a weakly prime, because it can be changed into another prime (3986902459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1993451244 + 1993451245.

It is an arithmetic number, because the mean of its divisors is an integer number (1993451245).

Almost surely, 2^3986902489 is an apocalyptic number.

It is an amenable number.

3986902489 is a deficient number, since it is larger than the sum of its proper divisors (1).

3986902489 is an equidigital number, since it uses as much as digits as its factorization.

3986902489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6718464, while the sum is 58.

The square root of 3986902489 is about 63141.9233869226. The cubic root of 3986902489 is about 1585.6665739147. Note that the first 3 decimals are identical.

The spelling of 3986902489 in words is "three billion, nine hundred eighty-six million, nine hundred two thousand, four hundred eighty-nine".