629734729 has 6 divisors (see below), whose sum is σ = 681902286. Its totient is φ = 581293440.

The previous prime is 629734691. The next prime is 629734751. The reversal of 629734729 is 927437926.

It is a happy number.

629734729 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 3 ways, for example, as 80066704 + 549668025 = 8948^2 + 23445^2 .

It is not a de Polignac number, because 629734729 - 2¹⁷ = 629603657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (629734799) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1862952 + ... + 1863289.

It is an arithmetic number, because the mean of its divisors is an integer number (113650381).

Almost surely, 2^629734729 is an apocalyptic number.

It is an amenable number.

629734729 is a deficient number, since it is larger than the sum of its proper divisors (52167557).

629734729 is a wasteful number, since it uses less digits than its factorization.

629734729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3726267 (or 3726254 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 49.

The square root of 629734729 is about 25094.5159148369. The cubic root of 629734729 is about 857.1415503247.

The spelling of 629734729 in words is "six hundred twenty-nine million, seven hundred thirty-four thousand, seven hundred twenty-nine".