478240319 has 2 divisors, whose sum is σ = 478240320. Its totient is φ = 478240318.

The previous prime is 478240307. The next prime is 478240327. The reversal of 478240319 is 913042874.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478240319 is a prime.

It is a super-2 number, since 2×478240319² = 457427605434443522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478240619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239120159 + 239120160.

It is an arithmetic number, because the mean of its divisors is an integer number (239120160).

Almost surely, 2^478240319 is an apocalyptic number.

478240319 is a deficient number, since it is larger than the sum of its proper divisors (1).

478240319 is an equidigital number, since it uses as much as digits as its factorization.

478240319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 478240319 is about 21868.7063860668. The cubic root of 478240319 is about 782.0155624483.

The spelling of 478240319 in words is "four hundred seventy-eight million, two hundred forty thousand, three hundred nineteen".