429689856 has 88 divisors (see below), whose sum is σ = 1164562864. Its totient is φ = 140820480.

The previous prime is 429689809. The next prime is 429689873. The reversal of 429689856 is 658986924.

It is a junction number, because it is equal to n+sod(n) for n = 429689796 and 429689805.

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, 186246 + ... + 188538.

Almost surely, 2^429689856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 429689856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (582281432).

429689856 is an abundant number, since it is smaller than the sum of its proper divisors (734873008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

429689856 is a wasteful number, since it uses less digits than its factorization.

429689856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2377 (or 2359 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 57.

The square root of 429689856 is about 20728.9617685016. The cubic root of 429689856 is about 754.6027212706.

The spelling of 429689856 in words is "four hundred twenty-nine million, six hundred eighty-nine thousand, eight hundred fifty-six".