434321257 has 2 divisors, whose sum is σ = 434321258. Its totient is φ = 434321256.

The previous prime is 434321227. The next prime is 434321339. The reversal of 434321257 is 752123434.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 423371776 + 10949481 = 20576^2 + 3309^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-434321257 is a prime.

It is not a weakly prime, because it can be changed into another prime (434321227) 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, 217160628 + 217160629.

It is an arithmetic number, because the mean of its divisors is an integer number (217160629).

Almost surely, 2^434321257 is an apocalyptic number.

It is an amenable number.

434321257 is a deficient number, since it is larger than the sum of its proper divisors (1).

434321257 is an equidigital number, since it uses as much as digits as its factorization.

434321257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 31.

The square root of 434321257 is about 20840.3756444072. The cubic root of 434321257 is about 757.3041937818.

It can be divided in two parts, 4343 and 21257, that added together give a square (25600 = 160²).

The spelling of 434321257 in words is "four hundred thirty-four million, three hundred twenty-one thousand, two hundred fifty-seven".