438989834 has 12 divisors (see below), whose sum is σ = 665099862. Its totient is φ = 217311600.

The previous prime is 438989833. The next prime is 438989839.

It is a happy number.

438989834 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 3 ways, for example, as 432764809 + 6225025 = 20803^2 + 2495^2 .

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 438989834.

It is not an unprimeable number, because it can be changed into a prime (438989833) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9644 + ... + 31160.

Almost surely, 2^438989834 is an apocalyptic number.

438989834 is a deficient number, since it is larger than the sum of its proper divisors (226110028).

438989834 is a wasteful number, since it uses less digits than its factorization.

438989834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21721 (or 21620 counting only the distinct ones).

The product of its digits is 5971968, while the sum is 56.

The square root of 438989834 is about 20952.0842399987. The cubic root of 438989834 is about 760.0079835265.

The spelling of 438989834 in words is "four hundred thirty-eight million, nine hundred eighty-nine thousand, eight hundred thirty-four".