193904339 has 2 divisors, whose sum is σ = 193904340. Its totient is φ = 193904338.

The previous prime is 193904323. The next prime is 193904341. The reversal of 193904339 is 933409391.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 193904339 - 2⁴ = 193904323 is a prime.

It is a Sophie Germain prime.

Together with 193904341, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 193904296 and 193904305.

It is not a weakly prime, because it can be changed into another prime (193904239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96952169 + 96952170.

It is an arithmetic number, because the mean of its divisors is an integer number (96952170).

Almost surely, 2^193904339 is an apocalyptic number.

193904339 is a deficient number, since it is larger than the sum of its proper divisors (1).

193904339 is an equidigital number, since it uses as much as digits as its factorization.

193904339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78732, while the sum is 41.

The square root of 193904339 is about 13924.9538239809. The cubic root of 193904339 is about 578.8008707483.

The spelling of 193904339 in words is "one hundred ninety-three million, nine hundred four thousand, three hundred thirty-nine".