97207889 has 2 divisors, whose sum is σ = 97207890. Its totient is φ = 97207888.

The previous prime is 97207849. The next prime is 97207927. The reversal of 97207889 is 98870279.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73393489 + 23814400 = 8567^2 + 4880^2 .

It is a cyclic number.

It is not a de Polignac number, because 97207889 - 2²⁰ = 96159313 is a prime.

It is not a weakly prime, because it can be changed into another prime (97207849) 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, 48603944 + 48603945.

It is an arithmetic number, because the mean of its divisors is an integer number (48603945).

Almost surely, 2^97207889 is an apocalyptic number.

It is an amenable number.

97207889 is a deficient number, since it is larger than the sum of its proper divisors (1).

97207889 is an equidigital number, since it uses as much as digits as its factorization.

97207889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 508032, while the sum is 50.

The square root of 97207889 is about 9859.4061180175. The cubic root of 97207889 is about 459.7980982254.

The spelling of 97207889 in words is "ninety-seven million, two hundred seven thousand, eight hundred eighty-nine".