629939 has 2 divisors, whose sum is σ = 629940. Its totient is φ = 629938.

The previous prime is 629929. The next prime is 629963. The reversal of 629939 is 939926.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 629939 - 2⁸ = 629683 is a prime.

It is not a weakly prime, because it can be changed into another prime (629929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314969 + 314970.

It is an arithmetic number, because the mean of its divisors is an integer number (314970).

2⁶²⁹⁹³⁹ is an apocalyptic number.

629939 is a deficient number, since it is larger than the sum of its proper divisors (1).

629939 is an equidigital number, since it uses as much as digits as its factorization.

629939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26244, while the sum is 38.

The square root of 629939 is about 793.6869660011. The cubic root of 629939 is about 85.7234219097.

It can be divided in two parts, 62 and 9939, that added together give a palindrome (10001).

The spelling of 629939 in words is "six hundred twenty-nine thousand, nine hundred thirty-nine".