478677349 has 2 divisors, whose sum is σ = 478677350. Its totient is φ = 478677348.

The previous prime is 478677301. The next prime is 478677361. The reversal of 478677349 is 943776874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 477641025 + 1036324 = 21855^2 + 1018^2 .

It is a cyclic number.

It is not a de Polignac number, because 478677349 - 2²¹ = 476580197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 478677349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478677389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239338674 + 239338675.

It is an arithmetic number, because the mean of its divisors is an integer number (239338675).

Almost surely, 2^478677349 is an apocalyptic number.

It is an amenable number.

478677349 is a deficient number, since it is larger than the sum of its proper divisors (1).

478677349 is an equidigital number, since it uses as much as digits as its factorization.

478677349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7112448, while the sum is 55.

The square root of 478677349 is about 21878.6962362934. The cubic root of 478677349 is about 782.2536994934.

The spelling of 478677349 in words is "four hundred seventy-eight million, six hundred seventy-seven thousand, three hundred forty-nine".