439789428 has 72 divisors (see below), whose sum is σ = 1260240800. Its totient is φ = 128195136.

The previous prime is 439789421. The next prime is 439789477. The reversal of 439789428 is 824987934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439789421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15838 + ... + 33621.

Almost surely, 2^439789428 is an apocalyptic number.

It is an amenable number.

439789428 is an abundant number, since it is smaller than the sum of its proper divisors (820451372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

439789428 is a wasteful number, since it uses less digits than its factorization.

439789428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49501 (or 49496 counting only the distinct ones).

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

The square root of 439789428 is about 20971.1570496241. The cubic root of 439789428 is about 760.4691401696.

The spelling of 439789428 in words is "four hundred thirty-nine million, seven hundred eighty-nine thousand, four hundred twenty-eight".