439121 has 4 divisors (see below), whose sum is σ = 448512. Its totient is φ = 429732.

The previous prime is 439081. The next prime is 439123. The reversal of 439121 is 121934.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 439121 - 2¹⁸ = 176977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 439093 and 439102.

It is not an unprimeable number, because it can be changed into a prime (439123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4625 + ... + 4718.

It is an arithmetic number, because the mean of its divisors is an integer number (112128).

2⁴³⁹¹²¹ is an apocalyptic number.

It is an amenable number.

439121 is a deficient number, since it is larger than the sum of its proper divisors (9391).

439121 is an equidigital number, since it uses as much as digits as its factorization.

439121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9390.

The product of its digits is 216, while the sum is 20.

The square root of 439121 is about 662.6620556513. The cubic root of 439121 is about 76.0083670382.

The spelling of 439121 in words is "four hundred thirty-nine thousand, one hundred twenty-one".