83840737 has 2 divisors, whose sum is σ = 83840738. Its totient is φ = 83840736.

The previous prime is 83840723. The next prime is 83840747. The reversal of 83840737 is 73704838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49688401 + 34152336 = 7049^2 + 5844^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83840737 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 83840737.

It is not a weakly prime, because it can be changed into another prime (83840717) 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, 41920368 + 41920369.

It is an arithmetic number, because the mean of its divisors is an integer number (41920369).

Almost surely, 2^83840737 is an apocalyptic number.

It is an amenable number.

83840737 is a deficient number, since it is larger than the sum of its proper divisors (1).

83840737 is an equidigital number, since it uses as much as digits as its factorization.

83840737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 83840737 is about 9156.4587587123. The cubic root of 83840737 is about 437.6749550063.

The spelling of 83840737 in words is "eighty-three million, eight hundred forty thousand, seven hundred thirty-seven".