478689319 has 2 divisors, whose sum is σ = 478689320. Its totient is φ = 478689318.

The previous prime is 478689293. The next prime is 478689331. The reversal of 478689319 is 913986874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 478689319 - 2⁹ = 478688807 is a prime.

It is a super-2 number, since 2×478689319² = 458286928249367522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 478689319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478689359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239344659 + 239344660.

It is an arithmetic number, because the mean of its divisors is an integer number (239344660).

Almost surely, 2^478689319 is an apocalyptic number.

478689319 is a deficient number, since it is larger than the sum of its proper divisors (1).

478689319 is an equidigital number, since it uses as much as digits as its factorization.

478689319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 55.

The square root of 478689319 is about 21878.9697883607. The cubic root of 478689319 is about 782.2602198902.

The spelling of 478689319 in words is "four hundred seventy-eight million, six hundred eighty-nine thousand, three hundred nineteen".