16327789 has 2 divisors, whose sum is σ = 16327790. Its totient is φ = 16327788.

The previous prime is 16327777. The next prime is 16327877. The reversal of 16327789 is 98772361.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14122564 + 2205225 = 3758^2 + 1485^2 .

It is a cyclic number.

It is not a de Polignac number, because 16327789 - 2¹⁵ = 16295021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16327739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8163894 + 8163895.

It is an arithmetic number, because the mean of its divisors is an integer number (8163895).

Almost surely, 2^16327789 is an apocalyptic number.

It is an amenable number.

16327789 is a deficient number, since it is larger than the sum of its proper divisors (1).

16327789 is an equidigital number, since it uses as much as digits as its factorization.

16327789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 127008, while the sum is 43.

The square root of 16327789 is about 4040.7658927486. The cubic root of 16327789 is about 253.6933752172.

The spelling of 16327789 in words is "sixteen million, three hundred twenty-seven thousand, seven hundred eighty-nine".