428552782397 has 2 divisors, whose sum is σ = 428552782398. Its totient is φ = 428552782396.

The previous prime is 428552782327. The next prime is 428552782423. The reversal of 428552782397 is 793287255824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 422377808836 + 6174973561 = 649906^2 + 78581^2 .

It is a cyclic number.

It is not a de Polignac number, because 428552782397 - 2¹⁶ = 428552716861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428552782327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214276391198 + 214276391199.

It is an arithmetic number, because the mean of its divisors is an integer number (214276391199).

Almost surely, 2^428552782397 is an apocalyptic number.

It is an amenable number.

428552782397 is a deficient number, since it is larger than the sum of its proper divisors (1).

428552782397 is an equidigital number, since it uses as much as digits as its factorization.

428552782397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67737600, while the sum is 62.

The spelling of 428552782397 in words is "four hundred twenty-eight billion, five hundred fifty-two million, seven hundred eighty-two thousand, three hundred ninety-seven".