1000444444 has 24 divisors (see below), whose sum is σ = 1831652928. Its totient is φ = 477634560.

The previous prime is 1000444429. The next prime is 1000444453. The reversal of 1000444444 is 4444440001.

It is a happy number.

1000444444 is a modest number, since divided by 44444 gives 10004 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57189 + ... + 72604.

It is an arithmetic number, because the mean of its divisors is an integer number (76318872).

Almost surely, 2^1000444444 is an apocalyptic number.

It is an amenable number.

1000444444 is a deficient number, since it is larger than the sum of its proper divisors (831208484).

1000444444 is a wasteful number, since it uses less digits than its factorization.

1000444444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129885 (or 129883 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

The square root of 1000444444 is about 31629.8030977115. The cubic root of 1000444444 is about 1000.1481260576.

Adding to 1000444444 its reverse (4444440001), we get a palindrome (5444884445).

The spelling of 1000444444 in words is "one billion, four hundred forty-four thousand, four hundred forty-four".