422381929 has 2 divisors, whose sum is σ = 422381930. Its totient is φ = 422381928.

The previous prime is 422381923. The next prime is 422381969. The reversal of 422381929 is 929183224.

It is an a-pointer prime, because the next prime (422381969) can be obtained adding 422381929 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 315879529 + 106502400 = 17773^2 + 10320^2 .

It is a cyclic number.

It is not a de Polignac number, because 422381929 - 2⁷ = 422381801 is a prime.

It is a super-2 number, since 2×422381929² = 356812987891522082, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 422381891 and 422381900.

It is not a weakly prime, because it can be changed into another prime (422381923) 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, 211190964 + 211190965.

It is an arithmetic number, because the mean of its divisors is an integer number (211190965).

Almost surely, 2^422381929 is an apocalyptic number.

It is an amenable number.

422381929 is a deficient number, since it is larger than the sum of its proper divisors (1).

422381929 is an equidigital number, since it uses as much as digits as its factorization.

422381929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 422381929 is about 20551.9324882114. The cubic root of 422381929 is about 750.3002821285.

The spelling of 422381929 in words is "four hundred twenty-two million, three hundred eighty-one thousand, nine hundred twenty-nine".