438752889 has 16 divisors (see below), whose sum is σ = 670973440. Its totient is φ = 283065840.

The previous prime is 438752879. The next prime is 438752893. The reversal of 438752889 is 988257834.

It is a happy number.

438752889 is a `hidden beast` number, since 4 + 38 + 7 + 528 + 89 = 666.

It is not a de Polignac number, because 438752889 - 2²⁵ = 405198457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438752819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261262 + ... + 262935.

It is an arithmetic number, because the mean of its divisors is an integer number (41935840).

Almost surely, 2^438752889 is an apocalyptic number.

It is an amenable number.

438752889 is a deficient number, since it is larger than the sum of its proper divisors (232220551).

438752889 is a wasteful number, since it uses less digits than its factorization.

438752889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524237 (or 524231 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 438752889 is about 20946.4290274023. The cubic root of 438752889 is about 759.8712206777.

It can be divided in two parts, 43875 and 2889, that added together give a palindrome (46764).

The spelling of 438752889 in words is "four hundred thirty-eight million, seven hundred fifty-two thousand, eight hundred eighty-nine".