83436109 has 2 divisors, whose sum is σ = 83436110. Its totient is φ = 83436108.

The previous prime is 83436091. The next prime is 83436137. The reversal of 83436109 is 90163438.

Together with previous prime (83436091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47472100 + 35964009 = 6890^2 + 5997^2 .

It is a cyclic number.

It is not a de Polignac number, because 83436109 - 2⁷ = 83435981 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83436169) 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, 41718054 + 41718055.

It is an arithmetic number, because the mean of its divisors is an integer number (41718055).

Almost surely, 2^83436109 is an apocalyptic number.

It is an amenable number.

83436109 is a deficient number, since it is larger than the sum of its proper divisors (1).

83436109 is an equidigital number, since it uses as much as digits as its factorization.

83436109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 83436109 is about 9134.3368122705. The cubic root of 83436109 is about 436.9697242281.

The spelling of 83436109 in words is "eighty-three million, four hundred thirty-six thousand, one hundred nine".