97390817 has 2 divisors, whose sum is σ = 97390818. Its totient is φ = 97390816.

The previous prime is 97390801. The next prime is 97390819. The reversal of 97390817 is 71809379.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88811776 + 8579041 = 9424^2 + 2929^2 .

It is a cyclic number.

It is not a de Polignac number, because 97390817 - 2⁴ = 97390801 is a prime.

Together with 97390819, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (97390819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48695408 + 48695409.

It is an arithmetic number, because the mean of its divisors is an integer number (48695409).

Almost surely, 2^97390817 is an apocalyptic number.

It is an amenable number.

97390817 is a deficient number, since it is larger than the sum of its proper divisors (1).

97390817 is an equidigital number, since it uses as much as digits as its factorization.

97390817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 97390817 is about 9868.6785842888. The cubic root of 97390817 is about 460.0863369766.

The spelling of 97390817 in words is "ninety-seven million, three hundred ninety thousand, eight hundred seventeen".