3989990929 has 2 divisors, whose sum is σ = 3989990930. Its totient is φ = 3989990928.

The previous prime is 3989990923. The next prime is 3989990971. The reversal of 3989990929 is 9290999893.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3119445904 + 870545025 = 55852^2 + 29505^2 .

It is a cyclic number.

It is not a de Polignac number, because 3989990929 - 2⁷ = 3989990801 is a prime.

It is a super-2 number, since 2×3989990929² = 31840055227004566082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3989990923) 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, 1994995464 + 1994995465.

It is an arithmetic number, because the mean of its divisors is an integer number (1994995465).

Almost surely, 2^3989990929 is an apocalyptic number.

It is an amenable number.

3989990929 is a deficient number, since it is larger than the sum of its proper divisors (1).

3989990929 is an equidigital number, since it uses as much as digits as its factorization.

3989990929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25509168, while the sum is 67.

The square root of 3989990929 is about 63166.3749870135. The cubic root of 3989990929 is about 1586.0759119149.

The spelling of 3989990929 in words is "three billion, nine hundred eighty-nine million, nine hundred ninety thousand, nine hundred twenty-nine".