428933347 has 2 divisors, whose sum is σ = 428933348. Its totient is φ = 428933346.

The previous prime is 428933317. The next prime is 428933353. The reversal of 428933347 is 743339824.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428933347 is a prime.

It is not a weakly prime, because it can be changed into another prime (428933317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214466673 + 214466674.

It is an arithmetic number, because the mean of its divisors is an integer number (214466674).

Almost surely, 2^428933347 is an apocalyptic number.

428933347 is a deficient number, since it is larger than the sum of its proper divisors (1).

428933347 is an equidigital number, since it uses as much as digits as its factorization.

428933347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 43.

The square root of 428933347 is about 20710.7060961233. The cubic root of 428933347 is about 754.1596116729.

It can be divided in two parts, 4289 and 33347, that added together give a square (37636 = 194²).

The spelling of 428933347 in words is "four hundred twenty-eight million, nine hundred thirty-three thousand, three hundred forty-seven".