629643386 has 16 divisors (see below), whose sum is σ = 949229736. Its totient is φ = 313238016.

The previous prime is 629643379. The next prime is 629643439. The reversal of 629643386 is 683346926.

It is a happy number.

629643386 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 436016161 + 193627225 = 20881^2 + 13915^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 629643386.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631040 + ... + 632036.

Almost surely, 2^629643386 is an apocalyptic number.

629643386 is a deficient number, since it is larger than the sum of its proper divisors (319586350).

629643386 is a wasteful number, since it uses less digits than its factorization.

629643386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273.

The product of its digits is 1119744, while the sum is 47.

The square root of 629643386 is about 25092.6958695155. The cubic root of 629643386 is about 857.1001055370.

The spelling of 629643386 in words is "six hundred twenty-nine million, six hundred forty-three thousand, three hundred eighty-six".