478304269 has 2 divisors, whose sum is σ = 478304270. Its totient is φ = 478304268.

The previous prime is 478304263. The next prime is 478304273. The reversal of 478304269 is 962403874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 264062500 + 214241769 = 16250^2 + 14637^2 .

It is a cyclic number.

It is not a de Polignac number, because 478304269 - 2¹⁵ = 478271501 is a prime.

It is a super-2 number, since 2×478304269² = 457549947487248722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478304263) 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, 239152134 + 239152135.

It is an arithmetic number, because the mean of its divisors is an integer number (239152135).

Almost surely, 2^478304269 is an apocalyptic number.

It is an amenable number.

478304269 is a deficient number, since it is larger than the sum of its proper divisors (1).

478304269 is an equidigital number, since it uses as much as digits as its factorization.

478304269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 478304269 is about 21870.1684721449. The cubic root of 478304269 is about 782.0504177740.

The spelling of 478304269 in words is "four hundred seventy-eight million, three hundred four thousand, two hundred sixty-nine".