439689872 has 20 divisors (see below), whose sum is σ = 856663920. Its totient is φ = 218615328.

The previous prime is 439689871. The next prime is 439689881. The reversal of 439689872 is 278986934.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (439689871) 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 3 ways as a sum of consecutive naturals, for example, 73898 + ... + 79625.

It is an arithmetic number, because the mean of its divisors is an integer number (42833196).

Almost surely, 2^439689872 is an apocalyptic number.

It is an amenable number.

439689872 is a deficient number, since it is larger than the sum of its proper divisors (416974048).

439689872 is a wasteful number, since it uses less digits than its factorization.

439689872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153710 (or 153704 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 56.

The square root of 439689872 is about 20968.7832741912. The cubic root of 439689872 is about 760.4117528728.

The spelling of 439689872 in words is "four hundred thirty-nine million, six hundred eighty-nine thousand, eight hundred seventy-two".