16440563 has 2 divisors, whose sum is σ = 16440564. Its totient is φ = 16440562.

The previous prime is 16440539. The next prime is 16440583. The reversal of 16440563 is 36504461.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16440563 is a prime.

It is a super-3 number, since 3×16440563³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (16440583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8220281 + 8220282.

It is an arithmetic number, because the mean of its divisors is an integer number (8220282).

Almost surely, 2^16440563 is an apocalyptic number.

16440563 is a deficient number, since it is larger than the sum of its proper divisors (1).

16440563 is an equidigital number, since it uses as much as digits as its factorization.

16440563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 16440563 is about 4054.6964128033. The cubic root of 16440563 is about 254.2761117955.

The spelling of 16440563 in words is "sixteen million, four hundred forty thousand, five hundred sixty-three".