439398 has 32 divisors (see below), whose sum is σ = 998400. Its totient is φ = 143208.

The previous prime is 439381. The next prime is 439409. The reversal of 439398 is 893934.

It is an Ulam number.

It is a d-powerful number, because it can be written as 4⁹ + 3⁴ + 3¹¹ + 9 + 9 + 8 .

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

439398 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4215 + ... + 4317.

It is an arithmetic number, because the mean of its divisors is an integer number (31200).

2⁴³⁹³⁹⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 439398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (499200).

439398 is an abundant number, since it is smaller than the sum of its proper divisors (559002).

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

439398 is a wasteful number, since it uses less digits than its factorization.

439398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 187 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 439398 is about 662.8710281797. The cubic root of 439398 is about 76.0243458475.

The spelling of 439398 in words is "four hundred thirty-nine thousand, three hundred ninety-eight".