438089 has 4 divisors (see below), whose sum is σ = 439824. Its totient is φ = 436356.

The previous prime is 438049. The next prime is 438091. The reversal of 438089 is 980834.

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, and also an emirpimes, since its reverse is a distinct semiprime: 980834 = 2 ⋅490417.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438029) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 407 + ... + 1020.

It is an arithmetic number, because the mean of its divisors is an integer number (109956).

2⁴³⁸⁰⁸⁹ is an apocalyptic number.

It is an amenable number.

438089 is a deficient number, since it is larger than the sum of its proper divisors (1735).

438089 is a wasteful number, since it uses less digits than its factorization.

438089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 438089 is about 661.8829201604. The cubic root of 438089 is about 75.9487766563.

The spelling of 438089 in words is "four hundred thirty-eight thousand, eighty-nine".