478688377 has 4 divisors (see below), whose sum is σ = 478807156. Its totient is φ = 478569600.

The previous prime is 478688359. The next prime is 478688387. The reversal of 478688377 is 773886874.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 773886874 = 2 ⋅386943437.

It can be written as a sum of positive squares in 2 ways, for example, as 362673936 + 116014441 = 19044^2 + 10771^2 .

It is a cyclic number.

It is not a de Polignac number, because 478688377 - 2²⁷ = 344470649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478688317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53124 + ... + 61477.

It is an arithmetic number, because the mean of its divisors is an integer number (119701789).

Almost surely, 2^478688377 is an apocalyptic number.

It is an amenable number.

478688377 is a deficient number, since it is larger than the sum of its proper divisors (118779).

478688377 is a wasteful number, since it uses less digits than its factorization.

478688377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118778.

The product of its digits is 12644352, while the sum is 58.

The square root of 478688377 is about 21878.9482608283. The cubic root of 478688377 is about 782.2597067602.

The spelling of 478688377 in words is "four hundred seventy-eight million, six hundred eighty-eight thousand, three hundred seventy-seven".