428773811 has 2 divisors, whose sum is σ = 428773812. Its totient is φ = 428773810.

The previous prime is 428773747. The next prime is 428773837. The reversal of 428773811 is 118377824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428773811 - 2⁶ = 428773747 is a prime.

It is not a weakly prime, because it can be changed into another prime (428773841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214386905 + 214386906.

It is an arithmetic number, because the mean of its divisors is an integer number (214386906).

Almost surely, 2^428773811 is an apocalyptic number.

428773811 is a deficient number, since it is larger than the sum of its proper divisors (1).

428773811 is an equidigital number, since it uses as much as digits as its factorization.

428773811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75264, while the sum is 41.

The square root of 428773811 is about 20706.8542033791. The cubic root of 428773811 is about 754.0661002308.

The spelling of 428773811 in words is "four hundred twenty-eight million, seven hundred seventy-three thousand, eight hundred eleven".