97989097 has 2 divisors, whose sum is σ = 97989098. Its totient is φ = 97989096.

The previous prime is 97989091. The next prime is 97989121. The reversal of 97989097 is 79098979.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63696361 + 34292736 = 7981^2 + 5856^2 .

It is a cyclic number.

It is not a de Polignac number, because 97989097 - 2¹¹ = 97987049 is a prime.

It is not a weakly prime, because it can be changed into another prime (97989091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48994548 + 48994549.

It is an arithmetic number, because the mean of its divisors is an integer number (48994549).

Almost surely, 2^97989097 is an apocalyptic number.

It is an amenable number.

97989097 is a deficient number, since it is larger than the sum of its proper divisors (1).

97989097 is an equidigital number, since it uses as much as digits as its factorization.

97989097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2571912, while the sum is 58.

The square root of 97989097 is about 9898.9442366345. The cubic root of 97989097 is about 461.0265307531.

The spelling of 97989097 in words is "ninety-seven million, nine hundred eighty-nine thousand, ninety-seven".