478887361 has 2 divisors, whose sum is σ = 478887362. Its totient is φ = 478887360.

The previous prime is 478887323. The next prime is 478887379. The reversal of 478887361 is 163788874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 411318961 + 67568400 = 20281^2 + 8220^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478887361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 478887299 and 478887308.

It is not a weakly prime, because it can be changed into another prime (478887061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239443680 + 239443681.

It is an arithmetic number, because the mean of its divisors is an integer number (239443681).

Almost surely, 2^478887361 is an apocalyptic number.

It is an amenable number.

478887361 is a deficient number, since it is larger than the sum of its proper divisors (1).

478887361 is an equidigital number, since it uses as much as digits as its factorization.

478887361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1806336, while the sum is 52.

The square root of 478887361 is about 21883.4951733036. The cubic root of 478887361 is about 782.3680831833.

The spelling of 478887361 in words is "four hundred seventy-eight million, eight hundred eighty-seven thousand, three hundred sixty-one".