1002444444 has 48 divisors (see below), whose sum is σ = 2601625600. Its totient is φ = 333801648.

The previous prime is 1002444439. The next prime is 1002444449. The reversal of 1002444444 is 4444442001.

It is an interprime number because it is at equal distance from previous prime (1002444439) and next prime (1002444449).

It is a Harshad number since it is a multiple of its sum of digits (27).

1002444444 is a modest number, since divided by 44444 gives 10024 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002444449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113127 + ... + 121665.

Almost surely, 2^1002444444 is an apocalyptic number.

It is an amenable number.

1002444444 is an abundant number, since it is smaller than the sum of its proper divisors (1599181156).

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

1002444444 is a wasteful number, since it uses less digits than its factorization.

1002444444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9639 (or 9631 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 27.

The square root of 1002444444 is about 31661.4030642990. The cubic root of 1002444444 is about 1000.8141516439.

Adding to 1002444444 its reverse (4444442001), we get a palindrome (5446886445).

The spelling of 1002444444 in words is "one billion, two million, four hundred forty-four thousand, four hundred forty-four".