421544344 has 16 divisors (see below), whose sum is σ = 851195520. Its totient is φ = 194558880.

The previous prime is 421544341. The next prime is 421544371. The reversal of 421544344 is 443445124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421544341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2026552 + ... + 2026759.

It is an arithmetic number, because the mean of its divisors is an integer number (53199720).

Almost surely, 2^421544344 is an apocalyptic number.

It is an amenable number.

421544344 is an abundant number, since it is smaller than the sum of its proper divisors (429651176).

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

421544344 is a wasteful number, since it uses less digits than its factorization.

421544344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4053330 (or 4053326 counting only the distinct ones).

The product of its digits is 30720, while the sum is 31.

The square root of 421544344 is about 20531.5450952918. The cubic root of 421544344 is about 749.8040044892.

Adding to 421544344 its reverse (443445124), we get a palindrome (864989468).

The spelling of 421544344 in words is "four hundred twenty-one million, five hundred forty-four thousand, three hundred forty-four".