439665142 has 12 divisors (see below), whose sum is σ = 767170980. Its totient is φ = 188427876.

The previous prime is 439665113. The next prime is 439665151. The reversal of 439665142 is 241566934.

It is a junction number, because it is equal to n+sod(n) for n = 439665095 and 439665104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2243092 + ... + 2243287.

It is an arithmetic number, because the mean of its divisors is an integer number (63930915).

Almost surely, 2^439665142 is an apocalyptic number.

439665142 is a deficient number, since it is larger than the sum of its proper divisors (327505838).

439665142 is a wasteful number, since it uses less digits than its factorization.

439665142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4486395 (or 4486388 counting only the distinct ones).

The product of its digits is 155520, while the sum is 40.

The square root of 439665142 is about 20968.1935798008. The cubic root of 439665142 is about 760.3974963582.

The spelling of 439665142 in words is "four hundred thirty-nine million, six hundred sixty-five thousand, one hundred forty-two".