83865473 has 2 divisors, whose sum is σ = 83865474. Its totient is φ = 83865472.

The previous prime is 83865469. The next prime is 83865497. The reversal of 83865473 is 37456838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51739249 + 32126224 = 7193^2 + 5668^2 .

It is a cyclic number.

It is not a de Polignac number, because 83865473 - 2² = 83865469 is a prime.

It is not a weakly prime, because it can be changed into another prime (83895473) 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, 41932736 + 41932737.

It is an arithmetic number, because the mean of its divisors is an integer number (41932737).

Almost surely, 2^83865473 is an apocalyptic number.

It is an amenable number.

83865473 is a deficient number, since it is larger than the sum of its proper divisors (1).

83865473 is an equidigital number, since it uses as much as digits as its factorization.

83865473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 483840, while the sum is 44.

The square root of 83865473 is about 9157.8093996326. The cubic root of 83865473 is about 437.7179940011.

The spelling of 83865473 in words is "eighty-three million, eight hundred sixty-five thousand, four hundred seventy-three".