8429423 has 2 divisors, whose sum is σ = 8429424. Its totient is φ = 8429422.

The previous prime is 8429411. The next prime is 8429429. The reversal of 8429423 is 3249248.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8429423 - 2⁸ = 8429167 is a prime.

It is a super-2 number, since 2×8429423² = 142110344225858, which contains 22 as substring.

It is a Sophie Germain prime.

It is equal to p₅₆₆₇₀₈ and since 8429423 and 566708 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8429423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8429429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4214711 + 4214712.

It is an arithmetic number, because the mean of its divisors is an integer number (4214712).

Almost surely, 2^8429423 is an apocalyptic number.

8429423 is a deficient number, since it is larger than the sum of its proper divisors (1).

8429423 is an equidigital number, since it uses as much as digits as its factorization.

8429423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 32.

The square root of 8429423 is about 2903.3468618131. The cubic root of 8429423 is about 203.5163394648.

The spelling of 8429423 in words is "eight million, four hundred twenty-nine thousand, four hundred twenty-three".