889740497 has 2 divisors, whose sum is σ = 889740498. Its totient is φ = 889740496.

The previous prime is 889740469. The next prime is 889740539. The reversal of 889740497 is 794047988.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 868127296 + 21613201 = 29464^2 + 4649^2 .

It is a cyclic number.

It is not a de Polignac number, because 889740497 - 2¹² = 889736401 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (889740427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444870248 + 444870249.

It is an arithmetic number, because the mean of its divisors is an integer number (444870249).

Almost surely, 2^889740497 is an apocalyptic number.

It is an amenable number.

889740497 is a deficient number, since it is larger than the sum of its proper divisors (1).

889740497 is an equidigital number, since it uses as much as digits as its factorization.

889740497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4064256, while the sum is 56.

The square root of 889740497 is about 29828.5181831079. The cubic root of 889740497 is about 961.8066733887.

It can be divided in two parts, 8897 and 40497, that added together give a palindrome (49394).

The spelling of 889740497 in words is "eight hundred eighty-nine million, seven hundred forty thousand, four hundred ninety-seven".