428860933 has 2 divisors, whose sum is σ = 428860934. Its totient is φ = 428860932.

The previous prime is 428860907. The next prime is 428861021. The reversal of 428860933 is 339068824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 404090404 + 24770529 = 20102^2 + 4977^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428860933 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 428860933.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428860433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214430466 + 214430467.

It is an arithmetic number, because the mean of its divisors is an integer number (214430467).

Almost surely, 2^428860933 is an apocalyptic number.

It is an amenable number.

428860933 is a deficient number, since it is larger than the sum of its proper divisors (1).

428860933 is an equidigital number, since it uses as much as digits as its factorization.

428860933 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 428860933 is about 20708.9577960843. The cubic root of 428860933 is about 754.1171693463.

The spelling of 428860933 in words is "four hundred twenty-eight million, eight hundred sixty thousand, nine hundred thirty-three".