428874841 has 2 divisors, whose sum is σ = 428874842. Its totient is φ = 428874840.

The previous prime is 428874829. The next prime is 428874847. The reversal of 428874841 is 148478824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 235776025 + 193098816 = 15355^2 + 13896^2 .

It is a cyclic number.

It is not a de Polignac number, because 428874841 - 2²³ = 420486233 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 428874791 and 428874800.

It is not a weakly prime, because it can be changed into another prime (428874847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214437420 + 214437421.

It is an arithmetic number, because the mean of its divisors is an integer number (214437421).

Almost surely, 2^428874841 is an apocalyptic number.

It is an amenable number.

428874841 is a deficient number, since it is larger than the sum of its proper divisors (1).

428874841 is an equidigital number, since it uses as much as digits as its factorization.

428874841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 458752, while the sum is 46.

The square root of 428874841 is about 20709.2935900769. The cubic root of 428874841 is about 754.1253212881.

The spelling of 428874841 in words is "four hundred twenty-eight million, eight hundred seventy-four thousand, eight hundred forty-one".