1040040443 has 8 divisors (see below), whose sum is σ = 1120334208. Its totient is φ = 959788224.

The previous prime is 1040040401. The next prime is 1040040457. The reversal of 1040040443 is 3440400401.

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 1040040443 - 2¹⁰ = 1040039419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1040040493) 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, 58646 + ... + 74292.

It is an arithmetic number, because the mean of its divisors is an integer number (140041776).

Almost surely, 2^1040040443 is an apocalyptic number.

1040040443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1040040443 is a deficient number, since it is larger than the sum of its proper divisors (80293765).

1040040443 is a wasteful number, since it uses less digits than its factorization.

1040040443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20773.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1040040443 is about 32249.6580291947. The cubic root of 1040040443 is about 1013.1725367287.

Adding to 1040040443 its reverse (3440400401), we get a palindrome (4480440844).

The spelling of 1040040443 in words is "one billion, forty million, forty thousand, four hundred forty-three".