428875869 has 8 divisors (see below), whose sum is σ = 577081120. Its totient is φ = 283293936.

The previous prime is 428875861. The next prime is 428875883. The reversal of 428875869 is 968578824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 428875869 - 2³ = 428875861 is a prime.

It is a super-2 number, since 2×428875869² = 367869022021010322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428875861) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 655447 + ... + 656100.

It is an arithmetic number, because the mean of its divisors is an integer number (72135140).

Almost surely, 2^428875869 is an apocalyptic number.

It is an amenable number.

428875869 is a deficient number, since it is larger than the sum of its proper divisors (148205251).

428875869 is a wasteful number, since it uses less digits than its factorization.

428875869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311659.

The product of its digits is 7741440, while the sum is 57.

The square root of 428875869 is about 20709.3184098367. The cubic root of 428875869 is about 754.1259238262.

The spelling of 428875869 in words is "four hundred twenty-eight million, eight hundred seventy-five thousand, eight hundred sixty-nine".