428935889 has 2 divisors, whose sum is σ = 428935890. Its totient is φ = 428935888.

The previous prime is 428935883. The next prime is 428935919. The reversal of 428935889 is 988539824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 428283025 + 652864 = 20695^2 + 808^2 .

It is a cyclic number.

It is not a de Polignac number, because 428935889 - 2²⁴ = 412158673 is a prime.

It is not a weakly prime, because it can be changed into another prime (428935883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214467944 + 214467945.

It is an arithmetic number, because the mean of its divisors is an integer number (214467945).

Almost surely, 2^428935889 is an apocalyptic number.

It is an amenable number.

428935889 is a deficient number, since it is larger than the sum of its proper divisors (1).

428935889 is an equidigital number, since it uses as much as digits as its factorization.

428935889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4976640, while the sum is 56.

The square root of 428935889 is about 20710.7674652583. The cubic root of 428935889 is about 754.1611014692.

The spelling of 428935889 in words is "four hundred twenty-eight million, nine hundred thirty-five thousand, eight hundred eighty-nine".