83966489 has 2 divisors, whose sum is σ = 83966490. Its totient is φ = 83966488.

The previous prime is 83966471. The next prime is 83966497. The reversal of 83966489 is 98466938.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46854025 + 37112464 = 6845^2 + 6092^2 .

It is a cyclic number.

It is not a de Polignac number, because 83966489 - 2¹² = 83962393 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83966489.

It is not a weakly prime, because it can be changed into another prime (83966089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41983244 + 41983245.

It is an arithmetic number, because the mean of its divisors is an integer number (41983245).

Almost surely, 2^83966489 is an apocalyptic number.

It is an amenable number.

83966489 is a deficient number, since it is larger than the sum of its proper divisors (1).

83966489 is an equidigital number, since it uses as much as digits as its factorization.

83966489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2239488, while the sum is 53.

The square root of 83966489 is about 9163.3230326121. The cubic root of 83966489 is about 437.8936673274.

The spelling of 83966489 in words is "eighty-three million, nine hundred sixty-six thousand, four hundred eighty-nine".