997350089 has 2 divisors, whose sum is σ = 997350090. Its totient is φ = 997350088.

The previous prime is 997350083. The next prime is 997350097. The reversal of 997350089 is 980053799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 790565689 + 206784400 = 28117^2 + 14380^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-997350089 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (997350083) 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, 498675044 + 498675045.

It is an arithmetic number, because the mean of its divisors is an integer number (498675045).

Almost surely, 2^997350089 is an apocalyptic number.

It is an amenable number.

997350089 is a deficient number, since it is larger than the sum of its proper divisors (1).

997350089 is an equidigital number, since it uses as much as digits as its factorization.

997350089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 612360, while the sum is 50.

The square root of 997350089 is about 31580.8500360582. The cubic root of 997350089 is about 999.1159149573.

The spelling of 997350089 in words is "nine hundred ninety-seven million, three hundred fifty thousand, eighty-nine".