99334421 has 2 divisors, whose sum is σ = 99334422. Its totient is φ = 99334420.

The previous prime is 99334397. The next prime is 99334423. The reversal of 99334421 is 12443399.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52562500 + 46771921 = 7250^2 + 6839^2 .

It is an emirp because it is prime and its reverse (12443399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99334421 - 2⁶ = 99334357 is a prime.

Together with 99334423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99334423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49667210 + 49667211.

It is an arithmetic number, because the mean of its divisors is an integer number (49667211).

Almost surely, 2^99334421 is an apocalyptic number.

It is an amenable number.

99334421 is a deficient number, since it is larger than the sum of its proper divisors (1).

99334421 is an equidigital number, since it uses as much as digits as its factorization.

99334421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 35.

The square root of 99334421 is about 9966.6654905239. The cubic root of 99334421 is about 463.1268088548.

The spelling of 99334421 in words is "ninety-nine million, three hundred thirty-four thousand, four hundred twenty-one".