478471853 has 2 divisors, whose sum is σ = 478471854. Its totient is φ = 478471852.

The previous prime is 478471849. The next prime is 478471933. The reversal of 478471853 is 358174874.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 438567364 + 39904489 = 20942^2 + 6317^2 .

It is a cyclic number.

It is not a de Polignac number, because 478471853 - 2² = 478471849 is a prime.

It is a super-2 number, since 2×478471853² = 457870628226507218, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 478471798 and 478471807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478471823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239235926 + 239235927.

It is an arithmetic number, because the mean of its divisors is an integer number (239235927).

Almost surely, 2^478471853 is an apocalyptic number.

It is an amenable number.

478471853 is a deficient number, since it is larger than the sum of its proper divisors (1).

478471853 is an equidigital number, since it uses as much as digits as its factorization.

478471853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 752640, while the sum is 47.

The square root of 478471853 is about 21873.9994742617. Note that the first 3 decimals coincide. The cubic root of 478471853 is about 782.1417430678.

The spelling of 478471853 in words is "four hundred seventy-eight million, four hundred seventy-one thousand, eight hundred fifty-three".