83700389 has 2 divisors, whose sum is σ = 83700390. Its totient is φ = 83700388.

The previous prime is 83700371. The next prime is 83700439. The reversal of 83700389 is 98300738.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57002500 + 26697889 = 7550^2 + 5167^2 .

It is a cyclic number.

It is not a de Polignac number, because 83700389 - 2²⁴ = 66923173 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83700319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41850194 + 41850195.

It is an arithmetic number, because the mean of its divisors is an integer number (41850195).

Almost surely, 2^83700389 is an apocalyptic number.

It is an amenable number.

83700389 is a deficient number, since it is larger than the sum of its proper divisors (1).

83700389 is an equidigital number, since it uses as much as digits as its factorization.

83700389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 83700389 is about 9148.7916688490. The cubic root of 83700389 is about 437.4305984062.

The spelling of 83700389 in words is "eighty-three million, seven hundred thousand, three hundred eighty-nine".