428639883 has 16 divisors (see below), whose sum is σ = 674236416. Its totient is φ = 237035520.

The previous prime is 428639881. The next prime is 428639899. The reversal of 428639883 is 388936824.

It is not a de Polignac number, because 428639883 - 2¹ = 428639881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (428639881) 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 15 ways as a sum of consecutive naturals, for example, 328566 + ... + 329867.

It is an arithmetic number, because the mean of its divisors is an integer number (42139776).

Almost surely, 2^428639883 is an apocalyptic number.

428639883 is a deficient number, since it is larger than the sum of its proper divisors (245596533).

428639883 is a wasteful number, since it uses less digits than its factorization.

428639883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658474.

The product of its digits is 1990656, while the sum is 51.

The square root of 428639883 is about 20703.6200457794. The cubic root of 428639883 is about 753.9875809131.

The spelling of 428639883 in words is "four hundred twenty-eight million, six hundred thirty-nine thousand, eight hundred eighty-three".