1002444409 has 4 divisors (see below), whose sum is σ = 1002549604. Its totient is φ = 1002339216.

The previous prime is 1002444407. The next prime is 1002444413. The reversal of 1002444409 is 9044442001.

1002444409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 489648384 + 512796025 = 22128^2 + 22645^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002444409 - 2¹ = 1002444407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002444407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36702 + ... + 57895.

It is an arithmetic number, because the mean of its divisors is an integer number (250637401).

Almost surely, 2^1002444409 is an apocalyptic number.

It is an amenable number.

1002444409 is a deficient number, since it is larger than the sum of its proper divisors (105195).

1002444409 is an equidigital number, since it uses as much as digits as its factorization.

1002444409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105194.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 1002444409 is about 31661.4025115755. The cubic root of 1002444409 is about 1000.8141399962.

It can be divided in two parts, 100244 and 4409, that added together give a triangular number (104653 = T₄₅₇).

The spelling of 1002444409 in words is "one billion, two million, four hundred forty-four thousand, four hundred nine".