428904443 has 8 divisors (see below), whose sum is σ = 470347776. Its totient is φ = 387869800.

The previous prime is 428904433. The next prime is 428904449. The reversal of 428904443 is 344409824.

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 428904443 - 2¹² = 428900347 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 428904397 and 428904406.

It is not an unprimeable number, because it can be changed into a prime (428904449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99971 + ... + 104172.

It is an arithmetic number, because the mean of its divisors is an integer number (58793472).

Almost surely, 2^428904443 is an apocalyptic number.

428904443 is a deficient number, since it is larger than the sum of its proper divisors (41443333).

428904443 is a wasteful number, since it uses less digits than its factorization.

428904443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204345.

The product of its (nonzero) digits is 110592, while the sum is 38.

The square root of 428904443 is about 20710.0082810220. The cubic root of 428904443 is about 754.1426714193.

The spelling of 428904443 in words is "four hundred twenty-eight million, nine hundred four thousand, four hundred forty-three".