478857777 has 8 divisors (see below), whose sum is σ = 648006816. Its totient is φ = 314473632.

The previous prime is 478857739. The next prime is 478857787. The reversal of 478857777 is 777758874.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 478857777 - 2⁸ = 478857521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 478857777.

It is not an unprimeable number, because it can be changed into a prime (478857787) 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 7 ways as a sum of consecutive naturals, for example, 1190988 + ... + 1191389.

It is an arithmetic number, because the mean of its divisors is an integer number (81000852).

Almost surely, 2^478857777 is an apocalyptic number.

It is an amenable number.

478857777 is a deficient number, since it is larger than the sum of its proper divisors (169149039).

478857777 is a wasteful number, since it uses less digits than its factorization.

478857777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2382447.

The product of its digits is 21512960, while the sum is 60.

The square root of 478857777 is about 21882.8192196527. The cubic root of 478857777 is about 782.3519721894.

The spelling of 478857777 in words is "four hundred seventy-eight million, eight hundred fifty-seven thousand, seven hundred seventy-seven".