629383991 has 8 divisors (see below), whose sum is σ = 644701200. Its totient is φ = 614097792.

The previous prime is 629383939. The next prime is 629384033. The reversal of 629383991 is 199383926.

629383991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 629383991 - 2¹⁸ = 629121847 is a prime.

It is a super-2 number, since 2×629383991² = 792248416254176162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629383901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36335 + ... + 50783.

It is an arithmetic number, because the mean of its divisors is an integer number (80587650).

Almost surely, 2^629383991 is an apocalyptic number.

629383991 is a deficient number, since it is larger than the sum of its proper divisors (15317209).

629383991 is a wasteful number, since it uses less digits than its factorization.

629383991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15505.

The product of its digits is 629856, while the sum is 50.

The square root of 629383991 is about 25087.5266018793. The cubic root of 629383991 is about 856.9823891573.

The spelling of 629383991 in words is "six hundred twenty-nine million, three hundred eighty-three thousand, nine hundred ninety-one".