629039639 has 2 divisors, whose sum is σ = 629039640. Its totient is φ = 629039638.

The previous prime is 629039611. The next prime is 629039641. The reversal of 629039639 is 936930926.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 629039639 - 2¹² = 629035543 is a prime.

It is a Sophie Germain prime.

Together with 629039641, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 629039593 and 629039602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (629039659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314519819 + 314519820.

It is an arithmetic number, because the mean of its divisors is an integer number (314519820).

Almost surely, 2^629039639 is an apocalyptic number.

629039639 is a deficient number, since it is larger than the sum of its proper divisors (1).

629039639 is an equidigital number, since it uses as much as digits as its factorization.

629039639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 472392, while the sum is 47.

The square root of 629039639 is about 25080.6626507355. The cubic root of 629039639 is about 856.8260683527.

The spelling of 629039639 in words is "six hundred twenty-nine million, thirty-nine thousand, six hundred thirty-nine".