193440497 has 2 divisors, whose sum is σ = 193440498. Its totient is φ = 193440496.

The previous prime is 193440493. The next prime is 193440503. The reversal of 193440497 is 794044391.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166306816 + 27133681 = 12896^2 + 5209^2 .

It is a cyclic number.

It is not a de Polignac number, because 193440497 - 2² = 193440493 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (193440493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96720248 + 96720249.

It is an arithmetic number, because the mean of its divisors is an integer number (96720249).

Almost surely, 2^193440497 is an apocalyptic number.

It is an amenable number.

193440497 is a deficient number, since it is larger than the sum of its proper divisors (1).

193440497 is an equidigital number, since it uses as much as digits as its factorization.

193440497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 193440497 is about 13908.2887876259. The cubic root of 193440497 is about 578.3389823206.

The spelling of 193440497 in words is "one hundred ninety-three million, four hundred forty thousand, four hundred ninety-seven".