99969943 has 2 divisors, whose sum is σ = 99969944. Its totient is φ = 99969942.

The previous prime is 99969941. The next prime is 99969949. The reversal of 99969943 is 34996999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99969943 - 2¹ = 99969941 is a prime.

Together with 99969941, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99969941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49984971 + 49984972.

It is an arithmetic number, because the mean of its divisors is an integer number (49984972).

Almost surely, 2^99969943 is an apocalyptic number.

99969943 is a deficient number, since it is larger than the sum of its proper divisors (1).

99969943 is an equidigital number, since it uses as much as digits as its factorization.

99969943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4251528, while the sum is 58.

The square root of 99969943 is about 9998.4970370551. The cubic root of 99969943 is about 464.1123746227.

The spelling of 99969943 in words is "ninety-nine million, nine hundred sixty-nine thousand, nine hundred forty-three".