97291489 has 2 divisors, whose sum is σ = 97291490. Its totient is φ = 97291488.

The previous prime is 97291477. The next prime is 97291591. The reversal of 97291489 is 98419279.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58752225 + 38539264 = 7665^2 + 6208^2 .

It is a cyclic number.

It is not a de Polignac number, because 97291489 - 2¹³ = 97283297 is a prime.

It is not a weakly prime, because it can be changed into another prime (97291409) 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, 48645744 + 48645745.

It is an arithmetic number, because the mean of its divisors is an integer number (48645745).

Almost surely, 2^97291489 is an apocalyptic number.

It is an amenable number.

97291489 is a deficient number, since it is larger than the sum of its proper divisors (1).

97291489 is an equidigital number, since it uses as much as digits as its factorization.

97291489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 49.

The square root of 97291489 is about 9863.6448131510. The cubic root of 97291489 is about 459.9298711617.

The spelling of 97291489 in words is "ninety-seven million, two hundred ninety-one thousand, four hundred eighty-nine".