422979229 has 2 divisors, whose sum is σ = 422979230. Its totient is φ = 422979228.

The previous prime is 422979217. The next prime is 422979233. The reversal of 422979229 is 922979224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 338376025 + 84603204 = 18395^2 + 9198^2 .

It is a cyclic number.

It is not a de Polignac number, because 422979229 - 2⁷ = 422979101 is a prime.

It is a super-2 number, since 2×422979229² = 357822856330868882, 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 (422979289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211489614 + 211489615.

It is an arithmetic number, because the mean of its divisors is an integer number (211489615).

Almost surely, 2^422979229 is an apocalyptic number.

It is an amenable number.

422979229 is a deficient number, since it is larger than the sum of its proper divisors (1).

422979229 is an equidigital number, since it uses as much as digits as its factorization.

422979229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 422979229 is about 20566.4588347144. The cubic root of 422979229 is about 750.6537878423.

The spelling of 422979229 in words is "four hundred twenty-two million, nine hundred seventy-nine thousand, two hundred twenty-nine".