629870399 has 8 divisors (see below), whose sum is σ = 633286080. Its totient is φ = 626461696.

The previous prime is 629870389. The next prime is 629870429. The reversal of 629870399 is 993078926.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-629870399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 629870399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629870389) 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 in 7 ways as a sum of consecutive naturals, for example, 370319 + ... + 372015.

It is an arithmetic number, because the mean of its divisors is an integer number (79160760).

Almost surely, 2^629870399 is an apocalyptic number.

629870399 is a deficient number, since it is larger than the sum of its proper divisors (3415681).

629870399 is a wasteful number, since it uses less digits than its factorization.

629870399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3489.

The product of its (nonzero) digits is 1469664, while the sum is 53.

The square root of 629870399 is about 25097.2189495171. The cubic root of 629870399 is about 857.2031000740.

The spelling of 629870399 in words is "six hundred twenty-nine million, eight hundred seventy thousand, three hundred ninety-nine".