439390842 has 16 divisors (see below), whose sum is σ = 958671072. Its totient is φ = 133148720.

The previous prime is 439390841. The next prime is 439390843. The reversal of 439390842 is 248093934.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (439390841) and next prime (439390843).

It is a junction number, because it is equal to n+sod(n) for n = 439390794 and 439390803.

It is not an unprimeable number, because it can be changed into a prime (439390841) 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 7 ways as a sum of consecutive naturals, for example, 3328653 + ... + 3328784.

It is an arithmetic number, because the mean of its divisors is an integer number (59916942).

Almost surely, 2^439390842 is an apocalyptic number.

439390842 is an abundant number, since it is smaller than the sum of its proper divisors (519280230).

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

439390842 is a wasteful number, since it uses less digits than its factorization.

439390842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6657453.

The product of its (nonzero) digits is 186624, while the sum is 42.

The square root of 439390842 is about 20961.6517001881. The cubic root of 439390842 is about 760.2393302114.

The spelling of 439390842 in words is "four hundred thirty-nine million, three hundred ninety thousand, eight hundred forty-two".