429989980 has 48 divisors (see below), whose sum is σ = 1042030080. Its totient is φ = 145988928.

The previous prime is 429989977. The next prime is 429989999. The reversal of 429989980 is 89989924.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 490 + ... + 29329.

It is an arithmetic number, because the mean of its divisors is an integer number (21708960).

Almost surely, 2^429989980 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 429989980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (521015040).

429989980 is an abundant number, since it is smaller than the sum of its proper divisors (612040100).

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

429989980 is a wasteful number, since it uses less digits than its factorization.

429989980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29938 (or 29936 counting only the distinct ones).

The product of its (nonzero) digits is 3359232, while the sum is 58.

The square root of 429989980 is about 20736.1997482663. The cubic root of 429989980 is about 754.7783686406.

The spelling of 429989980 in words is "four hundred twenty-nine million, nine hundred eighty-nine thousand, nine hundred eighty".