421222469 has 2 divisors, whose sum is σ = 421222470. Its totient is φ = 421222468.

The previous prime is 421222433. The next prime is 421222519. The reversal of 421222469 is 964222124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 357701569 + 63520900 = 18913^2 + 7970^2 .

It is a cyclic number.

It is not a de Polignac number, because 421222469 - 2⁸ = 421222213 is a prime.

It is a super-2 number, since 2×421222469² = 354856736780911922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421222369) 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, 210611234 + 210611235.

It is an arithmetic number, because the mean of its divisors is an integer number (210611235).

Almost surely, 2^421222469 is an apocalyptic number.

It is an amenable number.

421222469 is a deficient number, since it is larger than the sum of its proper divisors (1).

421222469 is an equidigital number, since it uses as much as digits as its factorization.

421222469 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 421222469 is about 20523.7050505020. The cubic root of 421222469 is about 749.6131154244.

The spelling of 421222469 in words is "four hundred twenty-one million, two hundred twenty-two thousand, four hundred sixty-nine".