438808219221 has 16 divisors (see below), whose sum is σ = 610534932480. Its totient is φ = 279810957360.

The previous prime is 438808219169. The next prime is 438808219229. The reversal of 438808219221 is 122912808834.

It is not a de Polignac number, because 438808219221 - 2⁷ = 438808219093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438808219229) 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, 2669076 + ... + 2828706.

It is an arithmetic number, because the mean of its divisors is an integer number (38158433280).

Almost surely, 2^438808219221 is an apocalyptic number.

It is an amenable number.

438808219221 is a deficient number, since it is larger than the sum of its proper divisors (171726713259).

438808219221 is a wasteful number, since it uses less digits than its factorization.

438808219221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199496.

The product of its (nonzero) digits is 442368, while the sum is 48.

The spelling of 438808219221 in words is "four hundred thirty-eight billion, eight hundred eight million, two hundred nineteen thousand, two hundred twenty-one".