99993427 has 2 divisors, whose sum is σ = 99993428. Its totient is φ = 99993426.

The previous prime is 99993419. The next prime is 99993433. The reversal of 99993427 is 72439999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99993427 - 2³ = 99993419 is a prime.

It is not a weakly prime, because it can be changed into another prime (99993407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49996713 + 49996714.

It is an arithmetic number, because the mean of its divisors is an integer number (49996714).

Almost surely, 2^99993427 is an apocalyptic number.

99993427 is a deficient number, since it is larger than the sum of its proper divisors (1).

99993427 is an equidigital number, since it uses as much as digits as its factorization.

99993427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1102248, while the sum is 52.

The square root of 99993427 is about 9999.6713445993. The cubic root of 99993427 is about 464.1487134173.

The spelling of 99993427 in words is "ninety-nine million, nine hundred ninety-three thousand, four hundred twenty-seven".