99986423 has 2 divisors, whose sum is σ = 99986424. Its totient is φ = 99986422.

The previous prime is 99986353. The next prime is 99986431. The reversal of 99986423 is 32468999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99986423 - 2²² = 95792119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99986483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49993211 + 49993212.

It is an arithmetic number, because the mean of its divisors is an integer number (49993212).

Almost surely, 2^99986423 is an apocalyptic number.

99986423 is a deficient number, since it is larger than the sum of its proper divisors (1).

99986423 is an equidigital number, since it uses as much as digits as its factorization.

99986423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 50.

The square root of 99986423 is about 9999.3211269566. The cubic root of 99986423 is about 464.1378761267.

The spelling of 99986423 in words is "ninety-nine million, nine hundred eighty-six thousand, four hundred twenty-three".