8343193391 has 16 divisors (see below), whose sum is σ = 9270812544. Its totient is φ = 7459789824.

The previous prime is 8343193373. The next prime is 8343193393. The reversal of 8343193391 is 1933913438.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8343193391 - 2¹⁰ = 8343192367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8343193393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11120 + ... + 129653.

It is an arithmetic number, because the mean of its divisors is an integer number (579425784).

Almost surely, 2^8343193391 is an apocalyptic number.

8343193391 is a deficient number, since it is larger than the sum of its proper divisors (927619153).

8343193391 is a wasteful number, since it uses less digits than its factorization.

8343193391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140930.

The product of its digits is 209952, while the sum is 44.

The square root of 8343193391 is about 91341.0827119977. The cubic root of 8343193391 is about 2028.1999615285.

The spelling of 8343193391 in words is "eight billion, three hundred forty-three million, one hundred ninety-three thousand, three hundred ninety-one".