889717447 has 2 divisors, whose sum is σ = 889717448. Its totient is φ = 889717446.

The previous prime is 889717397. The next prime is 889717459. The reversal of 889717447 is 744717988.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 889717447 - 2¹⁹ = 889193159 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 (889717747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444858723 + 444858724.

It is an arithmetic number, because the mean of its divisors is an integer number (444858724).

Almost surely, 2^889717447 is an apocalyptic number.

889717447 is a deficient number, since it is larger than the sum of its proper divisors (1).

889717447 is an equidigital number, since it uses as much as digits as its factorization.

889717447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3161088, while the sum is 55.

The square root of 889717447 is about 29828.1318053947. The cubic root of 889717447 is about 961.7983676578.

The spelling of 889717447 in words is "eight hundred eighty-nine million, seven hundred seventeen thousand, four hundred forty-seven".