1000439128 has 32 divisors (see below), whose sum is σ = 2031316560. Its totient is φ = 459181440.

The previous prime is 1000439107. The next prime is 1000439131. The reversal of 1000439128 is 8219340001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1000439096 and 1000439105.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 7750 + ... + 45397.

Almost surely, 2^1000439128 is an apocalyptic number.

It is an amenable number.

1000439128 is an abundant number, since it is smaller than the sum of its proper divisors (1030877432).

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

1000439128 is a wasteful number, since it uses less digits than its factorization.

1000439128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53347 (or 53343 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1000439128 is about 31629.7190629319. The cubic root of 1000439128 is about 1000.1463545793.

Adding to 1000439128 its reverse (8219340001), we get a palindrome (9219779129).

The spelling of 1000439128 in words is "one billion, four hundred thirty-nine thousand, one hundred twenty-eight".