438321493443 has 16 divisors (see below), whose sum is σ = 584776786176. Its totient is φ = 292040331360.

The previous prime is 438321493409. The next prime is 438321493447. The reversal of 438321493443 is 344394123834.

It is not a de Polignac number, because 438321493443 - 2¹⁰ = 438321492419 is a prime.

It is a super-2 number, since 2×438321493443² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 438321493392 and 438321493401.

It is not an unprimeable number, because it can be changed into a prime (438321493447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53665746 + ... + 53673912.

It is an arithmetic number, because the mean of its divisors is an integer number (36548549136).

Almost surely, 2^438321493443 is an apocalyptic number.

438321493443 is a deficient number, since it is larger than the sum of its proper divisors (146455292733).

438321493443 is a wasteful number, since it uses less digits than its factorization.

438321493443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16634.

The product of its digits is 2985984, while the sum is 48.

The spelling of 438321493443 in words is "four hundred thirty-eight billion, three hundred twenty-one million, four hundred ninety-three thousand, four hundred forty-three".