193891339 has 2 divisors, whose sum is σ = 193891340. Its totient is φ = 193891338.

The previous prime is 193891319. The next prime is 193891349. The reversal of 193891339 is 933198391.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 193891339 - 2¹¹ = 193889291 is a prime.

It is not a weakly prime, because it can be changed into another prime (193891319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96945669 + 96945670.

It is an arithmetic number, because the mean of its divisors is an integer number (96945670).

Almost surely, 2^193891339 is an apocalyptic number.

193891339 is a deficient number, since it is larger than the sum of its proper divisors (1).

193891339 is an equidigital number, since it uses as much as digits as its factorization.

193891339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 157464, while the sum is 46.

The square root of 193891339 is about 13924.4870282535. The cubic root of 193891339 is about 578.7879355392.

The spelling of 193891339 in words is "one hundred ninety-three million, eight hundred ninety-one thousand, three hundred thirty-nine".