428809403 has 8 divisors (see below), whose sum is σ = 469534320. Its totient is φ = 388374880.

The previous prime is 428809397. The next prime is 428809417. The reversal of 428809403 is 304908824.

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 428809403 - 2²² = 424615099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428809903) 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, 69500 + ... + 75417.

It is an arithmetic number, because the mean of its divisors is an integer number (58691790).

Almost surely, 2^428809403 is an apocalyptic number.

428809403 is a deficient number, since it is larger than the sum of its proper divisors (40724917).

428809403 is a wasteful number, since it uses less digits than its factorization.

428809403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145197.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 428809403 is about 20707.7136111160. The cubic root of 428809403 is about 754.0869643612.

The spelling of 428809403 in words is "four hundred twenty-eight million, eight hundred nine thousand, four hundred three".