97391873 has 2 divisors, whose sum is σ = 97391874. Its totient is φ = 97391872.

The previous prime is 97391843. The next prime is 97391887. The reversal of 97391873 is 37819379.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67108864 + 30283009 = 8192^2 + 5503^2 .

It is a cyclic number.

It is not a de Polignac number, because 97391873 - 2⁶ = 97391809 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (97391813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48695936 + 48695937.

It is an arithmetic number, because the mean of its divisors is an integer number (48695937).

Almost surely, 2^97391873 is an apocalyptic number.

It is an amenable number.

97391873 is a deficient number, since it is larger than the sum of its proper divisors (1).

97391873 is an equidigital number, since it uses as much as digits as its factorization.

97391873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 285768, while the sum is 47.

The square root of 97391873 is about 9868.7320867475. The cubic root of 97391873 is about 460.0879998624.

The spelling of 97391873 in words is "ninety-seven million, three hundred ninety-one thousand, eight hundred seventy-three".