99938351 has 2 divisors, whose sum is σ = 99938352. Its totient is φ = 99938350.

The previous prime is 99938341. The next prime is 99938353. The reversal of 99938351 is 15383999.

It is a strong prime.

It is an emirp because it is prime and its reverse (15383999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99938351 - 2⁶ = 99938287 is a prime.

Together with 99938353, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 99938296 and 99938305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99938353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49969175 + 49969176.

It is an arithmetic number, because the mean of its divisors is an integer number (49969176).

Almost surely, 2^99938351 is an apocalyptic number.

99938351 is a deficient number, since it is larger than the sum of its proper divisors (1).

99938351 is an equidigital number, since it uses as much as digits as its factorization.

99938351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262440, while the sum is 47.

The square root of 99938351 is about 9996.9170747786. The cubic root of 99938351 is about 464.0634806503.

The spelling of 99938351 in words is "ninety-nine million, nine hundred thirty-eight thousand, three hundred fifty-one".