438231489 has 8 divisors (see below), whose sum is σ = 609713472. Its totient is φ = 279451920.

The previous prime is 438231487. The next prime is 438231539. The reversal of 438231489 is 984132834.

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

It is not a de Polignac number, because 438231489 - 2¹ = 438231487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 438231489.

It is not an unprimeable number, because it can be changed into a prime (438231481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3175522 + ... + 3175659.

It is an arithmetic number, because the mean of its divisors is an integer number (76214184).

Almost surely, 2^438231489 is an apocalyptic number.

It is an amenable number.

438231489 is a deficient number, since it is larger than the sum of its proper divisors (171481983).

438231489 is a wasteful number, since it uses less digits than its factorization.

438231489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6351207.

The product of its digits is 165888, while the sum is 42.

The square root of 438231489 is about 20933.9792920505. The cubic root of 438231489 is about 759.5700990892.

The spelling of 438231489 in words is "four hundred thirty-eight million, two hundred thirty-one thousand, four hundred eighty-nine".