344221404 has 96 divisors (see below), whose sum is σ = 904296960. Its totient is φ = 101376000.

The previous prime is 344221393. The next prime is 344221417. The reversal of 344221404 is 404122443.

It is a happy number.

It is a super-3 number, since 3×344221404³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 214204 + ... + 215804.

It is an arithmetic number, because the mean of its divisors is an integer number (9419760).

Almost surely, 2^344221404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 344221404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (452148480).

344221404 is an abundant number, since it is smaller than the sum of its proper divisors (560075556).

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

344221404 is a wasteful number, since it uses less digits than its factorization.

344221404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691 (or 1689 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 344221404 is about 18553.2046827496. The cubic root of 344221404 is about 700.8299027737.

Adding to 344221404 its reverse (404122443), we get a palindrome (748343847).

The spelling of 344221404 in words is "three hundred forty-four million, two hundred twenty-one thousand, four hundred four".