193940441 has 2 divisors, whose sum is σ = 193940442. Its totient is φ = 193940440.

The previous prime is 193940423. The next prime is 193940443. The reversal of 193940441 is 144049391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164737225 + 29203216 = 12835^2 + 5404^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-193940441 is a prime.

It is a super-2 number, since 2×193940441² = 75225789310548962, which contains 22 as substring.

Together with 193940443, 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 (193940443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96970220 + 96970221.

It is an arithmetic number, because the mean of its divisors is an integer number (96970221).

Almost surely, 2^193940441 is an apocalyptic number.

It is an amenable number.

193940441 is a deficient number, since it is larger than the sum of its proper divisors (1).

193940441 is an equidigital number, since it uses as much as digits as its factorization.

193940441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 193940441 is about 13926.2500695629. The cubic root of 193940441 is about 578.8367897869.

The spelling of 193940441 in words is "one hundred ninety-three million, nine hundred forty thousand, four hundred forty-one".