1021444006 has 20 divisors (see below), whose sum is σ = 1685420460. Its totient is φ = 464279420.

The previous prime is 1021443991. The next prime is 1021444013. The reversal of 1021444006 is 6004441201.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 11841 + ... + 46723.

It is an arithmetic number, because the mean of its divisors is an integer number (84271023).

Almost surely, 2^1021444006 is an apocalyptic number.

1021444006 is a deficient number, since it is larger than the sum of its proper divisors (663976454).

1021444006 is an frugal number, since it uses more digits than its factorization.

1021444006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34929 (or 34896 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1021444006 is about 31960.0376407788. The cubic root of 1021444006 is about 1007.0975081993.

Adding to 1021444006 its reverse (6004441201), we get a palindrome (7025885207).

The spelling of 1021444006 in words is "one billion, twenty-one million, four hundred forty-four thousand, six".