440004023 has 2 divisors, whose sum is σ = 440004024. Its totient is φ = 440004022.

The previous prime is 440004011. The next prime is 440004029. The reversal of 440004023 is 320400044.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 440004023 - 2⁶ = 440003959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 440003992 and 440004010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (440004029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220002011 + 220002012.

It is an arithmetic number, because the mean of its divisors is an integer number (220002012).

Almost surely, 2^440004023 is an apocalyptic number.

440004023 is a deficient number, since it is larger than the sum of its proper divisors (1).

440004023 is an equidigital number, since it uses as much as digits as its factorization.

440004023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 440004023 is about 20976.2728576838. The cubic root of 440004023 is about 760.5928102176.

Adding to 440004023 its reverse (320400044), we get a palindrome (760404067).

The spelling of 440004023 in words is "four hundred forty million, four thousand, twenty-three".