429823 has 2 divisors, whose sum is σ = 429824. Its totient is φ = 429822.

The previous prime is 429817. The next prime is 429827. The reversal of 429823 is 328924.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 429823 - 2⁵ = 429791 is a prime.

It is a super-2 number, since 2×429823² = 369495622658, which contains 22 as substring.

429823 is a lucky number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 429791 and 429800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (429827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214911 + 214912.

It is an arithmetic number, because the mean of its divisors is an integer number (214912).

2⁴²⁹⁸²³ is an apocalyptic number.

429823 is a deficient number, since it is larger than the sum of its proper divisors (1).

429823 is an equidigital number, since it uses as much as digits as its factorization.

429823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 429823 is about 655.6088773041. The cubic root of 429823 is about 75.4680653798.

The spelling of 429823 in words is "four hundred twenty-nine thousand, eight hundred twenty-three".