428923211 has 2 divisors, whose sum is σ = 428923212. Its totient is φ = 428923210.

The previous prime is 428923199. The next prime is 428923241. The reversal of 428923211 is 112329824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428923211 - 2¹⁸ = 428661067 is a prime.

It is not a weakly prime, because it can be changed into another prime (428923241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214461605 + 214461606.

It is an arithmetic number, because the mean of its divisors is an integer number (214461606).

Almost surely, 2^428923211 is an apocalyptic number.

428923211 is a deficient number, since it is larger than the sum of its proper divisors (1).

428923211 is an equidigital number, since it uses as much as digits as its factorization.

428923211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 32.

The square root of 428923211 is about 20710.4613903216. The cubic root of 428923211 is about 754.1536711835.

The spelling of 428923211 in words is "four hundred twenty-eight million, nine hundred twenty-three thousand, two hundred eleven".