440808163 has 2 divisors, whose sum is σ = 440808164. Its totient is φ = 440808162.

The previous prime is 440808161. The next prime is 440808197. The reversal of 440808163 is 361808044.

It is an a-pointer prime, because the next prime (440808197) can be obtained adding 440808163 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 440808163 - 2¹ = 440808161 is a prime.

Together with 440808161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (440808161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220404081 + 220404082.

It is an arithmetic number, because the mean of its divisors is an integer number (220404082).

Almost surely, 2^440808163 is an apocalyptic number.

440808163 is a deficient number, since it is larger than the sum of its proper divisors (1).

440808163 is an equidigital number, since it uses as much as digits as its factorization.

440808163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 440808163 is about 20995.4319555469. The cubic root of 440808163 is about 761.0558748358.

The spelling of 440808163 in words is "four hundred forty million, eight hundred eight thousand, one hundred sixty-three".