83816009 has 2 divisors, whose sum is σ = 83816010. Its totient is φ = 83816008.

The previous prime is 83815981. The next prime is 83816021. The reversal of 83816009 is 90061838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82810000 + 1006009 = 9100^2 + 1003^2 .

It is a cyclic number.

It is not a de Polignac number, because 83816009 - 2¹⁶ = 83750473 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83816009.

It is not a weakly prime, because it can be changed into another prime (83816059) 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, 41908004 + 41908005.

It is an arithmetic number, because the mean of its divisors is an integer number (41908005).

Almost surely, 2^83816009 is an apocalyptic number.

It is an amenable number.

83816009 is a deficient number, since it is larger than the sum of its proper divisors (1).

83816009 is an equidigital number, since it uses as much as digits as its factorization.

83816009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 83816009 is about 9155.1083554483. The cubic root of 83816009 is about 437.6319214688.

The spelling of 83816009 in words is "eighty-three million, eight hundred sixteen thousand, nine".