629828789 has 2 divisors, whose sum is σ = 629828790. Its totient is φ = 629828788.

The previous prime is 629828779. The next prime is 629828791. The reversal of 629828789 is 987828926.

629828789 is digitally balanced in base 2, 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., 554225764 + 75603025 = 23542^2 + 8695^2 .

It is a cyclic number.

It is not a de Polignac number, because 629828789 - 2⁸ = 629828533 is a prime.

Together with 629828791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (629828779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314914394 + 314914395.

It is an arithmetic number, because the mean of its divisors is an integer number (314914395).

Almost surely, 2^629828789 is an apocalyptic number.

It is an amenable number.

629828789 is a deficient number, since it is larger than the sum of its proper divisors (1).

629828789 is an equidigital number, since it uses as much as digits as its factorization.

629828789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6967296, while the sum is 59.

The square root of 629828789 is about 25096.3899595141. The cubic root of 629828789 is about 857.1842237007.

The spelling of 629828789 in words is "six hundred twenty-nine million, eight hundred twenty-eight thousand, seven hundred eighty-nine".