1000444401 has 48 divisors (see below), whose sum is σ = 1611529920. Its totient is φ = 592997760.

The previous prime is 1000444399. The next prime is 1000444427. The reversal of 1000444401 is 1044440001.

It is not a de Polignac number, because 1000444401 - 2¹ = 1000444399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1000444301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 895095 + ... + 896211.

It is an arithmetic number, because the mean of its divisors is an integer number (33573540).

Almost surely, 2^1000444401 is an apocalyptic number.

1000444401 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000444401 is a deficient number, since it is larger than the sum of its proper divisors (611085519).

1000444401 is a wasteful number, since it uses less digits than its factorization.

1000444401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326 (or 1323 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1000444401 is about 31629.8024179728. The cubic root of 1000444401 is about 1000.1481117285.

Adding to 1000444401 its reverse (1044440001), we get a palindrome (2044884402).

The spelling of 1000444401 in words is "one billion, four hundred forty-four thousand, four hundred one".