438173089 has 4 divisors (see below), whose sum is σ = 438319024. Its totient is φ = 438027156.

The previous prime is 438173059. The next prime is 438173107. The reversal of 438173089 is 980371834.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 438173089 - 2¹⁵ = 438140321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438173059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68367 + ... + 74500.

It is an arithmetic number, because the mean of its divisors is an integer number (109579756).

Almost surely, 2^438173089 is an apocalyptic number.

It is an amenable number.

438173089 is a deficient number, since it is larger than the sum of its proper divisors (145935).

438173089 is a wasteful number, since it uses less digits than its factorization.

438173089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145934.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 438173089 is about 20932.5843841605. The cubic root of 438173089 is about 759.5363567517.

The spelling of 438173089 in words is "four hundred thirty-eight million, one hundred seventy-three thousand, eighty-nine".