429299780 has 144 divisors (see below), whose sum is σ = 1166893056. Its totient is φ = 131362560.

The previous prime is 429299779. The next prime is 429299797. The reversal of 429299780 is 87992924.

It is a super-2 number, since 2×429299780² = 368596602216096800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 394397 + ... + 395483.

It is an arithmetic number, because the mean of its divisors is an integer number (8103424).

Almost surely, 2^429299780 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 429299780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (583446528).

429299780 is an abundant number, since it is smaller than the sum of its proper divisors (737593276).

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

429299780 is a wasteful number, since it uses less digits than its factorization.

429299780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1154 (or 1145 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 429299780 is about 20719.5506708037. The cubic root of 429299780 is about 754.3743072771.

The spelling of 429299780 in words is "four hundred twenty-nine million, two hundred ninety-nine thousand, seven hundred eighty".