99404023 has 2 divisors, whose sum is σ = 99404024. Its totient is φ = 99404022.

The previous prime is 99404021. The next prime is 99404051. The reversal of 99404023 is 32040499.

It is a weak prime.

It is an emirp because it is prime and its reverse (32040499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99404023 - 2¹ = 99404021 is a prime.

Together with 99404021, 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 (99404021) 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, 49702011 + 49702012.

It is an arithmetic number, because the mean of its divisors is an integer number (49702012).

Almost surely, 2^99404023 is an apocalyptic number.

99404023 is a deficient number, since it is larger than the sum of its proper divisors (1).

99404023 is an equidigital number, since it uses as much as digits as its factorization.

99404023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 99404023 is about 9970.1566186294. The cubic root of 99404023 is about 463.2349520543.

The spelling of 99404023 in words is "ninety-nine million, four hundred four thousand, twenty-three".