428905913 has 2 divisors, whose sum is σ = 428905914. Its totient is φ = 428905912.

The previous prime is 428905907. The next prime is 428905957. The reversal of 428905913 is 319509824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342546064 + 86359849 = 18508^2 + 9293^2 .

It is a cyclic number.

It is not a de Polignac number, because 428905913 - 2⁶ = 428905849 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (428905013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214452956 + 214452957.

It is an arithmetic number, because the mean of its divisors is an integer number (214452957).

Almost surely, 2^428905913 is an apocalyptic number.

It is an amenable number.

428905913 is a deficient number, since it is larger than the sum of its proper divisors (1).

428905913 is an equidigital number, since it uses as much as digits as its factorization.

428905913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 428905913 is about 20710.0437710788. The cubic root of 428905913 is about 754.1435329853.

The spelling of 428905913 in words is "four hundred twenty-eight million, nine hundred five thousand, nine hundred thirteen".