479778865 has 8 divisors (see below), whose sum is σ = 576037440. Its totient is φ = 383621232.

The previous prime is 479778863. The next prime is 479778881. The reversal of 479778865 is 568877974.

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

It is a cyclic number.

It is not a de Polignac number, because 479778865 - 2¹ = 479778863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (479778863) 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, 14349 + ... + 34138.

It is an arithmetic number, because the mean of its divisors is an integer number (72004680).

Almost surely, 2^479778865 is an apocalyptic number.

It is an amenable number.

479778865 is a deficient number, since it is larger than the sum of its proper divisors (96258575).

479778865 is a wasteful number, since it uses less digits than its factorization.

479778865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50471.

The product of its digits is 23708160, while the sum is 61.

The square root of 479778865 is about 21903.8550259994. The cubic root of 479778865 is about 782.8532716735.

The spelling of 479778865 in words is "four hundred seventy-nine million, seven hundred seventy-eight thousand, eight hundred sixty-five".