999992423 has 2 divisors, whose sum is σ = 999992424. Its totient is φ = 999992422.

The previous prime is 999992407. The next prime is 999992447. The reversal of 999992423 is 324299999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999992423 - 2⁴ = 999992407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999992023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499996211 + 499996212.

It is an arithmetic number, because the mean of its divisors is an integer number (499996212).

Almost surely, 2^999992423 is an apocalyptic number.

999992423 is a deficient number, since it is larger than the sum of its proper divisors (1).

999992423 is an equidigital number, since it uses as much as digits as its factorization.

999992423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2834352, while the sum is 56.

The square root of 999992423 is about 31622.6567985677. The cubic root of 999992423 is about 999.9974743270.

The spelling of 999992423 in words is "nine hundred ninety-nine million, nine hundred ninety-two thousand, four hundred twenty-three".