428772863 has 2 divisors, whose sum is σ = 428772864. Its totient is φ = 428772862.

The previous prime is 428772857. The next prime is 428772871. The reversal of 428772863 is 368277824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428772863 - 2⁴ = 428772847 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428772803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214386431 + 214386432.

It is an arithmetic number, because the mean of its divisors is an integer number (214386432).

Almost surely, 2^428772863 is an apocalyptic number.

428772863 is a deficient number, since it is larger than the sum of its proper divisors (1).

428772863 is an equidigital number, since it uses as much as digits as its factorization.

428772863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 903168, while the sum is 47.

The square root of 428772863 is about 20706.8313123954. The cubic root of 428772863 is about 754.0655444948.

The spelling of 428772863 in words is "four hundred twenty-eight million, seven hundred seventy-two thousand, eight hundred sixty-three".