9999997043 has 2 divisors, whose sum is σ = 9999997044. Its totient is φ = 9999997042.

The previous prime is 9999997003. The next prime is 9999997069. The reversal of 9999997043 is 3407999999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9999997043 - 2²⁰ = 9998948467 is a prime.

It is a super-3 number, since 3×9999997043³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (9999997003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999998521 + 4999998522.

It is an arithmetic number, because the mean of its divisors is an integer number (4999998522).

Almost surely, 2^9999997043 is an apocalyptic number.

9999997043 is a deficient number, since it is larger than the sum of its proper divisors (1).

9999997043 is an equidigital number, since it uses as much as digits as its factorization.

9999997043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 44641044, while the sum is 68.

The square root of 9999997043 is about 99999.9852149989. The cubic root of 9999997043 is about 2154.4344776764.

The spelling of 9999997043 in words is "nine billion, nine hundred ninety-nine million, nine hundred ninety-seven thousand, forty-three".