479778887 has 8 divisors (see below), whose sum is σ = 548470272. Its totient is φ = 411125400.

The previous prime is 479778881. The next prime is 479778917. The reversal of 479778887 is 788877974.

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

It is not a de Polignac number, because 479778887 - 2¹⁰ = 479777863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (479778881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27062 + ... + 41132.

It is an arithmetic number, because the mean of its divisors is an integer number (68558784).

Almost surely, 2^479778887 is an apocalyptic number.

479778887 is a deficient number, since it is larger than the sum of its proper divisors (68691385).

479778887 is a wasteful number, since it uses less digits than its factorization.

479778887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18949.

The product of its digits is 44255232, while the sum is 65.

The square root of 479778887 is about 21903.8555281941. The cubic root of 479778887 is about 782.8532836392.

The spelling of 479778887 in words is "four hundred seventy-nine million, seven hundred seventy-eight thousand, eight hundred eighty-seven".