439396668 has 18 divisors (see below), whose sum is σ = 1110697224. Its totient is φ = 146465544.

The previous prime is 439396667. The next prime is 439396673. The reversal of 439396668 is 866693934.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439396667) 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 5 ways as a sum of consecutive naturals, for example, 6102696 + ... + 6102767.

Almost surely, 2^439396668 is an apocalyptic number.

It is an amenable number.

439396668 is an abundant number, since it is smaller than the sum of its proper divisors (671300556).

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

439396668 is a wasteful number, since it uses less digits than its factorization.

439396668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12205473 (or 12205468 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 54.

The square root of 439396668 is about 20961.7906677841. The cubic root of 439396668 is about 760.2426902683.

The spelling of 439396668 in words is "four hundred thirty-nine million, three hundred ninety-six thousand, six hundred sixty-eight".