99998417423 has 2 divisors, whose sum is σ = 99998417424. Its totient is φ = 99998417422.

The previous prime is 99998417401. The next prime is 99998417461. The reversal of 99998417423 is 32471489999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99998417423 - 2⁶ = 99998417359 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99998417423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99998416423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49999208711 + 49999208712.

It is an arithmetic number, because the mean of its divisors is an integer number (49999208712).

Almost surely, 2^99998417423 is an apocalyptic number.

99998417423 is a deficient number, since it is larger than the sum of its proper divisors (1).

99998417423 is an equidigital number, since it uses as much as digits as its factorization.

99998417423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35271936, while the sum is 65.

The spelling of 99998417423 in words is "ninety-nine billion, nine hundred ninety-eight million, four hundred seventeen thousand, four hundred twenty-three".