439040064 has 56 divisors (see below), whose sum is σ = 1170175968. Its totient is φ = 145269760.

The previous prime is 439040059. The next prime is 439040089. The reversal of 439040064 is 460040934.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17959 + ... + 34649.

Almost surely, 2^439040064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 439040064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (585087984).

439040064 is an abundant number, since it is smaller than the sum of its proper divisors (731135904).

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

439040064 is a wasteful number, since it uses less digits than its factorization.

439040064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16843 (or 16833 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 439040064 is about 20953.2828931411. The cubic root of 439040064 is about 760.0369695774.

Adding to 439040064 its reverse (460040934), we get a palindrome (899080998).

The spelling of 439040064 in words is "four hundred thirty-nine million, forty thousand, sixty-four".