428293297 has 2 divisors, whose sum is σ = 428293298. Its totient is φ = 428293296.

The previous prime is 428293273. The next prime is 428293301. The reversal of 428293297 is 792392824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311134321 + 117158976 = 17639^2 + 10824^2 .

It is a cyclic number.

It is not a de Polignac number, because 428293297 - 2¹¹ = 428291249 is a prime.

It is not a weakly prime, because it can be changed into another prime (428293247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214146648 + 214146649.

It is an arithmetic number, because the mean of its divisors is an integer number (214146649).

Almost surely, 2^428293297 is an apocalyptic number.

It is an amenable number.

428293297 is a deficient number, since it is larger than the sum of its proper divisors (1).

428293297 is an equidigital number, since it uses as much as digits as its factorization.

428293297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 46.

The square root of 428293297 is about 20695.2481743998. The cubic root of 428293297 is about 753.7843084894.

It can be divided in two parts, 4282 and 93297, that added together give a palindrome (97579).

The spelling of 428293297 in words is "four hundred twenty-eight million, two hundred ninety-three thousand, two hundred ninety-seven".