428601973 has 2 divisors, whose sum is σ = 428601974. Its totient is φ = 428601972.

The previous prime is 428601967. The next prime is 428601989. The reversal of 428601973 is 379106824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 412617969 + 15984004 = 20313^2 + 3998^2 .

It is a cyclic number.

It is not a de Polignac number, because 428601973 - 2¹⁷ = 428470901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428601473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214300986 + 214300987.

It is an arithmetic number, because the mean of its divisors is an integer number (214300987).

Almost surely, 2^428601973 is an apocalyptic number.

It is an amenable number.

428601973 is a deficient number, since it is larger than the sum of its proper divisors (1).

428601973 is an equidigital number, since it uses as much as digits as its factorization.

428601973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 428601973 is about 20702.7044851633. The cubic root of 428601973 is about 753.9653520655.

The spelling of 428601973 in words is "four hundred twenty-eight million, six hundred one thousand, nine hundred seventy-three".