83966447 has 2 divisors, whose sum is σ = 83966448. Its totient is φ = 83966446.

The previous prime is 83966423. The next prime is 83966461. The reversal of 83966447 is 74466938.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83966447 - 2⁸ = 83966191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83966497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41983223 + 41983224.

It is an arithmetic number, because the mean of its divisors is an integer number (41983224).

Almost surely, 2^83966447 is an apocalyptic number.

83966447 is a deficient number, since it is larger than the sum of its proper divisors (1).

83966447 is an equidigital number, since it uses as much as digits as its factorization.

83966447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 47.

The square root of 83966447 is about 9163.3207408668. The cubic root of 83966447 is about 437.8935943160.

The spelling of 83966447 in words is "eighty-three million, nine hundred sixty-six thousand, four hundred forty-seven".