16435109 has 2 divisors, whose sum is σ = 16435110. Its totient is φ = 16435108.

The previous prime is 16435103. The next prime is 16435117. The reversal of 16435109 is 90153461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14250625 + 2184484 = 3775^2 + 1478^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16435109 is a prime.

It is a super-2 number, since 2×16435109² = 540225615683762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16435103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8217554 + 8217555.

It is an arithmetic number, because the mean of its divisors is an integer number (8217555).

Almost surely, 2^16435109 is an apocalyptic number.

It is an amenable number.

16435109 is a deficient number, since it is larger than the sum of its proper divisors (1).

16435109 is an equidigital number, since it uses as much as digits as its factorization.

16435109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 16435109 is about 4054.0238035808. The cubic root of 16435109 is about 254.2479907939.

The spelling of 16435109 in words is "sixteen million, four hundred thirty-five thousand, one hundred nine".