438815489 has 8 divisors (see below), whose sum is σ = 502171968. Its totient is φ = 375626160.

The previous prime is 438815467. The next prime is 438815491. The reversal of 438815489 is 984518834.

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

It is not a de Polignac number, because 438815489 - 2²⁰ = 437766913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438815189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36107 + ... + 46704.

It is an arithmetic number, because the mean of its divisors is an integer number (62771496).

Almost surely, 2^438815489 is an apocalyptic number.

It is an amenable number.

438815489 is a deficient number, since it is larger than the sum of its proper divisors (63356479).

438815489 is an equidigital number, since it uses as much as digits as its factorization.

438815489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83575.

The product of its digits is 1105920, while the sum is 50.

The square root of 438815489 is about 20947.9232622234. The cubic root of 438815489 is about 759.9073577057.

The spelling of 438815489 in words is "four hundred thirty-eight million, eight hundred fifteen thousand, four hundred eighty-nine".