3996489869 has 2 divisors, whose sum is σ = 3996489870. Its totient is φ = 3996489868.

The previous prime is 3996489839. The next prime is 3996489881. The reversal of 3996489869 is 9689846993.

3996489869 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2140172644 + 1856317225 = 46262^2 + 43085^2 .

It is a cyclic number.

It is not a de Polignac number, because 3996489869 - 2⁸ = 3996489613 is a prime.

It is a super-2 number, since 2×3996489869² = 31943862546039274322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3996489839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998244934 + 1998244935.

It is an arithmetic number, because the mean of its divisors is an integer number (1998244935).

Almost surely, 2^3996489869 is an apocalyptic number.

It is an amenable number.

3996489869 is a deficient number, since it is larger than the sum of its proper divisors (1).

3996489869 is an equidigital number, since it uses as much as digits as its factorization.

3996489869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181398528, while the sum is 71.

The square root of 3996489869 is about 63217.7970906927. The cubic root of 3996489869 is about 1586.9365839429.

The spelling of 3996489869 in words is "three billion, nine hundred ninety-six million, four hundred eighty-nine thousand, eight hundred sixty-nine".