97940393 has 2 divisors, whose sum is σ = 97940394. Its totient is φ = 97940392.

The previous prime is 97940351. The next prime is 97940419. The reversal of 97940393 is 39304979.

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., 95785369 + 2155024 = 9787^2 + 1468^2 .

It is a cyclic number.

It is not a de Polignac number, because 97940393 - 2⁸ = 97940137 is a prime.

It is not a weakly prime, because it can be changed into another prime (97940303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48970196 + 48970197.

It is an arithmetic number, because the mean of its divisors is an integer number (48970197).

Almost surely, 2^97940393 is an apocalyptic number.

It is an amenable number.

97940393 is a deficient number, since it is larger than the sum of its proper divisors (1).

97940393 is an equidigital number, since it uses as much as digits as its factorization.

97940393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183708, while the sum is 44.

The square root of 97940393 is about 9896.4838705472. The cubic root of 97940393 is about 460.9501360045.

The spelling of 97940393 in words is "ninety-seven million, nine hundred forty thousand, three hundred ninety-three".