428989473 has 32 divisors (see below), whose sum is σ = 706423680. Its totient is φ = 255078720.

The previous prime is 428989453. The next prime is 428989487. The reversal of 428989473 is 374989824.

It is not a de Polignac number, because 428989473 - 2⁹ = 428988961 is a prime.

It is a super-3 number, since 3×428989473³ (a number of 27 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (428989403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2115 + ... + 29367.

It is an arithmetic number, because the mean of its divisors is an integer number (22075740).

Almost surely, 2^428989473 is an apocalyptic number.

It is an amenable number.

428989473 is a deficient number, since it is larger than the sum of its proper divisors (277434207).

428989473 is a wasteful number, since it uses less digits than its factorization.

428989473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27326 (or 27320 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 428989473 is about 20712.0610514743. The cubic root of 428989473 is about 754.1925042086.

The spelling of 428989473 in words is "four hundred twenty-eight million, nine hundred eighty-nine thousand, four hundred seventy-three".