424423169 has 2 divisors, whose sum is σ = 424423170. Its totient is φ = 424423168.

The previous prime is 424423079. The next prime is 424423171. The reversal of 424423169 is 961324424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 395532544 + 28890625 = 19888^2 + 5375^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-424423169 is a prime.

It is a super-2 number, since 2×424423169² = 360270052768005122, which contains 22 as substring.

Together with 424423171, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (424423369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 212211584 + 212211585.

It is an arithmetic number, because the mean of its divisors is an integer number (212211585).

Almost surely, 2^424423169 is an apocalyptic number.

It is an amenable number.

424423169 is a deficient number, since it is larger than the sum of its proper divisors (1).

424423169 is an equidigital number, since it uses as much as digits as its factorization.

424423169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 35.

The square root of 424423169 is about 20601.5331711016. The cubic root of 424423169 is about 751.5069959967.

The spelling of 424423169 in words is "four hundred twenty-four million, four hundred twenty-three thousand, one hundred sixty-nine".