3969999629 has 2 divisors, whose sum is σ = 3969999630. Its totient is φ = 3969999628.

The previous prime is 3969999623. The next prime is 3969999679. The reversal of 3969999629 is 9269999693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3282144100 + 687855529 = 57290^2 + 26227^2 .

It is an emirp because it is prime and its reverse (9269999693) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3969999629 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3969999623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1984999814 + 1984999815.

It is an arithmetic number, because the mean of its divisors is an integer number (1984999815).

Almost surely, 2^3969999629 is an apocalyptic number.

It is an amenable number.

3969999629 is a deficient number, since it is larger than the sum of its proper divisors (1).

3969999629 is an equidigital number, since it uses as much as digits as its factorization.

3969999629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 114791256, while the sum is 71.

The square root of 3969999629 is about 63007.9330640198. The cubic root of 3969999629 is about 1583.4225372112.

The spelling of 3969999629 in words is "three billion, nine hundred sixty-nine million, nine hundred ninety-nine thousand, six hundred twenty-nine".