421446344 has 32 divisors (see below), whose sum is σ = 874203840. Its totient is φ = 188865600.

The previous prime is 421446343. The next prime is 421446349. The reversal of 421446344 is 443644124.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 421446344.

It is not an unprimeable number, because it can be changed into a prime (421446341) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 27479 + ... + 39974.

It is an arithmetic number, because the mean of its divisors is an integer number (27318870).

Almost surely, 2^421446344 is an apocalyptic number.

421446344 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

421446344 is an abundant number, since it is smaller than the sum of its proper divisors (452757496).

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

421446344 is a wasteful number, since it uses less digits than its factorization.

421446344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67541 (or 67537 counting only the distinct ones).

The product of its digits is 36864, while the sum is 32.

The square root of 421446344 is about 20529.1583850873. The cubic root of 421446344 is about 749.7458955473.

The spelling of 421446344 in words is "four hundred twenty-one million, four hundred forty-six thousand, three hundred forty-four".