439938399 has 8 divisors (see below), whose sum is σ = 602438320. Its totient is φ = 285365376.

The previous prime is 439938361. The next prime is 439938403. The reversal of 439938399 is 993839934.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 439938399 - 2¹⁷ = 439807327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439938299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1981594 + ... + 1981815.

It is an arithmetic number, because the mean of its divisors is an integer number (75304790).

Almost surely, 2^439938399 is an apocalyptic number.

439938399 is a deficient number, since it is larger than the sum of its proper divisors (162499921).

439938399 is a wasteful number, since it uses less digits than its factorization.

439938399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3963449.

The product of its digits is 5668704, while the sum is 57.

The square root of 439938399 is about 20974.7085557821. The cubic root of 439938399 is about 760.5549956965.

The spelling of 439938399 in words is "four hundred thirty-nine million, nine hundred thirty-eight thousand, three hundred ninety-nine".