1040404433 has 4 divisors (see below), whose sum is σ = 1040483568. Its totient is φ = 1040325300.

The previous prime is 1040404429. The next prime is 1040404459. The reversal of 1040404433 is 3344040401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1040404433 - 2² = 1040404429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1040404399 and 1040404408.

It is not an unprimeable number, because it can be changed into a prime (1040404633) 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, 14591 + ... + 47892.

It is an arithmetic number, because the mean of its divisors is an integer number (260120892).

Almost surely, 2^1040404433 is an apocalyptic number.

It is an amenable number.

1040404433 is a deficient number, since it is larger than the sum of its proper divisors (79135).

1040404433 is an equidigital number, since it uses as much as digits as its factorization.

1040404433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79134.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1040404433 is about 32255.3008511779. The cubic root of 1040404433 is about 1013.2907185618.

Adding to 1040404433 its reverse (3344040401), we get a palindrome (4384444834).

The spelling of 1040404433 in words is "one billion, forty million, four hundred four thousand, four hundred thirty-three".