16352009 has 2 divisors, whose sum is σ = 16352010. Its totient is φ = 16352008.

The previous prime is 16351991. The next prime is 16352041. The reversal of 16352009 is 90025361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10725625 + 5626384 = 3275^2 + 2372^2 .

It is an emirp because it is prime and its reverse (90025361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16352009 - 2¹² = 16347913 is a prime.

It is not a weakly prime, because it can be changed into another prime (16352309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8176004 + 8176005.

It is an arithmetic number, because the mean of its divisors is an integer number (8176005).

Almost surely, 2^16352009 is an apocalyptic number.

It is an amenable number.

16352009 is a deficient number, since it is larger than the sum of its proper divisors (1).

16352009 is an equidigital number, since it uses as much as digits as its factorization.

16352009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 16352009 is about 4043.7617387774. The cubic root of 16352009 is about 253.8187528357.

The spelling of 16352009 in words is "sixteen million, three hundred fifty-two thousand, nine".