1040044909 has 8 divisors (see below), whose sum is σ = 1067403960. Its totient is φ = 1012780800.

The previous prime is 1040044903. The next prime is 1040044927. The reversal of 1040044909 is 9094400401.

It can be written as a sum of positive squares in 4 ways, for example, as 3526884 + 1036518025 = 1878^2 + 32195^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1040044909 - 2¹⁹ = 1039520621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040044903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1264 + ... + 45625.

It is an arithmetic number, because the mean of its divisors is an integer number (133425495).

Almost surely, 2^1040044909 is an apocalyptic number.

It is an amenable number.

1040044909 is a deficient number, since it is larger than the sum of its proper divisors (27359051).

1040044909 is an equidigital number, since it uses as much as digits as its factorization.

1040044909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47471.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 1040044909 is about 32249.7272701646. The cubic root of 1040044909 is about 1013.1739869358.

The spelling of 1040044909 in words is "one billion, forty million, forty-four thousand, nine hundred nine".