629988349 has 2 divisors, whose sum is σ = 629988350. Its totient is φ = 629988348.

The previous prime is 629988341. The next prime is 629988361. The reversal of 629988349 is 943889926.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 629508100 + 480249 = 25090^2 + 693^2 .

It is a cyclic number.

It is not a de Polignac number, because 629988349 - 2³ = 629988341 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 629988293 and 629988302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (629988341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314994174 + 314994175.

It is an arithmetic number, because the mean of its divisors is an integer number (314994175).

Almost surely, 2^629988349 is an apocalyptic number.

It is an amenable number.

629988349 is a deficient number, since it is larger than the sum of its proper divisors (1).

629988349 is an equidigital number, since it uses as much as digits as its factorization.

629988349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6718464, while the sum is 58.

The square root of 629988349 is about 25099.5687014737. The cubic root of 629988349 is about 857.2566035648.

The spelling of 629988349 in words is "six hundred twenty-nine million, nine hundred eighty-eight thousand, three hundred forty-nine".