428103889 has 2 divisors, whose sum is σ = 428103890. Its totient is φ = 428103888.

The previous prime is 428103883. The next prime is 428103959. The reversal of 428103889 is 988301824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229068225 + 199035664 = 15135^2 + 14108^2 .

It is a cyclic number.

It is not a de Polignac number, because 428103889 - 2³ = 428103881 is a prime.

It is not a weakly prime, because it can be changed into another prime (428103881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214051944 + 214051945.

It is an arithmetic number, because the mean of its divisors is an integer number (214051945).

Almost surely, 2^428103889 is an apocalyptic number.

It is an amenable number.

428103889 is a deficient number, since it is larger than the sum of its proper divisors (1).

428103889 is an equidigital number, since it uses as much as digits as its factorization.

428103889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 428103889 is about 20690.6715454091. The cubic root of 428103889 is about 753.6731744985.

The spelling of 428103889 in words is "four hundred twenty-eight million, one hundred three thousand, eight hundred eighty-nine".