629657429 has 2 divisors, whose sum is σ = 629657430. Its totient is φ = 629657428.

The previous prime is 629657387. The next prime is 629657513. The reversal of 629657429 is 924756926.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 611424529 + 18232900 = 24727^2 + 4270^2 .

It is a cyclic number.

It is not a de Polignac number, because 629657429 - 2²⁰ = 628608853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (629957429) 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, 314828714 + 314828715.

It is an arithmetic number, because the mean of its divisors is an integer number (314828715).

Almost surely, 2^629657429 is an apocalyptic number.

It is an amenable number.

629657429 is a deficient number, since it is larger than the sum of its proper divisors (1).

629657429 is an equidigital number, since it uses as much as digits as its factorization.

629657429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1632960, while the sum is 50.

The square root of 629657429 is about 25092.9756904198. The cubic root of 629657429 is about 857.1064774864.

The spelling of 629657429 in words is "six hundred twenty-nine million, six hundred fifty-seven thousand, four hundred twenty-nine".