1000421444 has 12 divisors (see below), whose sum is σ = 1909895568. Its totient is φ = 454737000.

The previous prime is 1000421417. The next prime is 1000421479. The reversal of 1000421444 is 4441240001.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 11368382 + ... + 11368469.

It is an arithmetic number, because the mean of its divisors is an integer number (159157964).

Almost surely, 2^1000421444 is an apocalyptic number.

It is an amenable number.

1000421444 is a deficient number, since it is larger than the sum of its proper divisors (909474124).

1000421444 is a wasteful number, since it uses less digits than its factorization.

1000421444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22736866 (or 22736864 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1000421444 is about 31629.4395144776. The cubic root of 1000421444 is about 1000.1404616029.

Adding to 1000421444 its reverse (4441240001), we get a palindrome (5441661445).

The spelling of 1000421444 in words is "one billion, four hundred twenty-one thousand, four hundred forty-four".