478338269 has 2 divisors, whose sum is σ = 478338270. Its totient is φ = 478338268.

The previous prime is 478338251. The next prime is 478338347. The reversal of 478338269 is 962833874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 452072644 + 26265625 = 21262^2 + 5125^2 .

It is a cyclic number.

It is not a de Polignac number, because 478338269 - 2²⁰ = 477289693 is a prime.

It is a super-2 number, since 2×478338269² = 457614999179832722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478338169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239169134 + 239169135.

It is an arithmetic number, because the mean of its divisors is an integer number (239169135).

Almost surely, 2^478338269 is an apocalyptic number.

It is an amenable number.

478338269 is a deficient number, since it is larger than the sum of its proper divisors (1).

478338269 is an equidigital number, since it uses as much as digits as its factorization.

478338269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 50.

The square root of 478338269 is about 21870.9457728741. The cubic root of 478338269 is about 782.0689478784.

The spelling of 478338269 in words is "four hundred seventy-eight million, three hundred thirty-eight thousand, two hundred sixty-nine".