428775803 has 2 divisors, whose sum is σ = 428775804. Its totient is φ = 428775802.

The previous prime is 428775791. The next prime is 428775889. The reversal of 428775803 is 308577824.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428775803 - 2¹⁰ = 428774779 is a prime.

It is not a weakly prime, because it can be changed into another prime (428772803) 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 as a sum of consecutive naturals, namely, 214387901 + 214387902.

It is an arithmetic number, because the mean of its divisors is an integer number (214387902).

Almost surely, 2^428775803 is an apocalyptic number.

428775803 is a deficient number, since it is larger than the sum of its proper divisors (1).

428775803 is an equidigital number, since it uses as much as digits as its factorization.

428775803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 376320, while the sum is 44.

The square root of 428775803 is about 20706.9023033384. The cubic root of 428775803 is about 754.0672679773.

The spelling of 428775803 in words is "four hundred twenty-eight million, seven hundred seventy-five thousand, eight hundred three".