438881490 has 80 divisors (see below), whose sum is σ = 1197865152. Its totient is φ = 115274016.

The previous prime is 438881489. The next prime is 438881497. The reversal of 438881490 is 94188834.

438881490 is a `hidden beast` number, since 4 + 3 + 88 + 81 + 490 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (438881497) 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 39 ways as a sum of consecutive naturals, for example, 50227 + ... + 58313.

Almost surely, 2^438881490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 438881490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (598932576).

438881490 is an abundant number, since it is smaller than the sum of its proper divisors (758983662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

438881490 is a wasteful number, since it uses less digits than its factorization.

438881490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8173 (or 8164 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 438881490 is about 20949.4985620181. The cubic root of 438881490 is about 759.9454543032.

The spelling of 438881490 in words is "four hundred thirty-eight million, eight hundred eighty-one thousand, four hundred ninety".