629408879 has 8 divisors (see below), whose sum is σ = 695320320. Its totient is φ = 564946200.

The previous prime is 629408861. The next prime is 629408881. The reversal of 629408879 is 978804926.

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

It is a cyclic number.

It is not a de Polignac number, because 629408879 - 2²⁰ = 628360303 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 629408879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (629408849) 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, 361277 + ... + 363014.

It is an arithmetic number, because the mean of its divisors is an integer number (86915040).

Almost surely, 2^629408879 is an apocalyptic number.

629408879 is a deficient number, since it is larger than the sum of its proper divisors (65911441).

629408879 is a wasteful number, since it uses less digits than its factorization.

629408879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724381.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The square root of 629408879 is about 25088.0226203661. The cubic root of 629408879 is about 856.9936850153.

The spelling of 629408879 in words is "six hundred twenty-nine million, four hundred eight thousand, eight hundred seventy-nine".