99991343 has 2 divisors, whose sum is σ = 99991344. Its totient is φ = 99991342.

The previous prime is 99991303. The next prime is 99991363. The reversal of 99991343 is 34319999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99991343 - 2²⁴ = 83214127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99991303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49995671 + 49995672.

It is an arithmetic number, because the mean of its divisors is an integer number (49995672).

Almost surely, 2^99991343 is an apocalyptic number.

99991343 is a deficient number, since it is larger than the sum of its proper divisors (1).

99991343 is an equidigital number, since it uses as much as digits as its factorization.

99991343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 236196, while the sum is 47.

The square root of 99991343 is about 9999.5671406316. The cubic root of 99991343 is about 464.1454888966.

The spelling of 99991343 in words is "ninety-nine million, nine hundred ninety-one thousand, three hundred forty-three".