479777985 has 24 divisors (see below), whose sum is σ = 862417920. Its totient is φ = 255880944.

The previous prime is 479777971. The next prime is 479778007. The reversal of 479777985 is 589777974.

479777985 is a `hidden beast` number, since 479 + 7 + 77 + 98 + 5 = 666.

It is not a de Polignac number, because 479777985 - 2¹¹ = 479775937 is a prime.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 196225 + ... + 198654.

It is an arithmetic number, because the mean of its divisors is an integer number (35934080).

Almost surely, 2^479777985 is an apocalyptic number.

479777985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

479777985 is a deficient number, since it is larger than the sum of its proper divisors (382639935).

479777985 is an equidigital number, since it uses as much as digits as its factorization.

479777985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394899 (or 394887 counting only the distinct ones).

The product of its digits is 31116960, while the sum is 63.

The square root of 479777985 is about 21903.8349382020. The cubic root of 479777985 is about 782.8527930423.

The spelling of 479777985 in words is "four hundred seventy-nine million, seven hundred seventy-seven thousand, nine hundred eighty-five".