438489 has 12 divisors (see below), whose sum is σ = 642096. Its totient is φ = 288312.

The previous prime is 438479. The next prime is 438499. The reversal of 438489 is 984834.

It is an interprime number because it is at equal distance from previous prime (438479) and next prime (438499).

It is not a de Polignac number, because 438489 - 2⁸ = 438233 is a prime.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (438409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 454 + ... + 1040.

It is an arithmetic number, because the mean of its divisors is an integer number (53508).

2⁴³⁸⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

438489 is a deficient number, since it is larger than the sum of its proper divisors (203607).

438489 is a wasteful number, since it uses less digits than its factorization.

438489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676 (or 673 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 438489 is about 662.1850194621. The cubic root of 438489 is about 75.9718847990.

The spelling of 438489 in words is "four hundred thirty-eight thousand, four hundred eighty-nine".