16463999 has 2 divisors, whose sum is σ = 16464000. Its totient is φ = 16463998.

The previous prime is 16463989. The next prime is 16464011. The reversal of 16463999 is 99936461.

It is a weak prime.

It is an emirp because it is prime and its reverse (99936461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16463999 - 2⁸ = 16463743 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16463989) 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, 8231999 + 8232000.

It is an arithmetic number, because the mean of its divisors is an integer number (8232000).

Almost surely, 2^16463999 is an apocalyptic number.

16463999 is a deficient number, since it is larger than the sum of its proper divisors (1).

16463999 is an equidigital number, since it uses as much as digits as its factorization.

16463999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 314928, while the sum is 47.

The square root of 16463999 is about 4057.5853657070. The cubic root of 16463999 is about 254.3968778459.

It can be divided in two parts, 164639 and 99, that multiplied together give a palindrome (16299261).

The spelling of 16463999 in words is "sixteen million, four hundred sixty-three thousand, nine hundred ninety-nine".