421077229 has 2 divisors, whose sum is σ = 421077230. Its totient is φ = 421077228.

The previous prime is 421077197. The next prime is 421077253. The reversal of 421077229 is 922770124.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 362140900 + 58936329 = 19030^2 + 7677^2 .

It is a cyclic number.

It is not a de Polignac number, because 421077229 - 2⁵ = 421077197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421077194 and 421077203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421077269) 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, 210538614 + 210538615.

It is an arithmetic number, because the mean of its divisors is an integer number (210538615).

Almost surely, 2^421077229 is an apocalyptic number.

It is an amenable number.

421077229 is a deficient number, since it is larger than the sum of its proper divisors (1).

421077229 is an equidigital number, since it uses as much as digits as its factorization.

421077229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 421077229 is about 20520.1663979608. The cubic root of 421077229 is about 749.5269485073.

The spelling of 421077229 in words is "four hundred twenty-one million, seventy-seven thousand, two hundred twenty-nine".