478487386 has 16 divisors (see below), whose sum is σ = 773506944. Its totient is φ = 220678704.

The previous prime is 478487381. The next prime is 478487417. The reversal of 478487386 is 683784874.

It is a happy number.

It is a super-2 number, since 2×478487386² = 457900357122225992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (478487381) 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, 34155 + ... + 46081.

It is an arithmetic number, because the mean of its divisors is an integer number (48344184).

Almost surely, 2^478487386 is an apocalyptic number.

478487386 is a deficient number, since it is larger than the sum of its proper divisors (295019558).

478487386 is a wasteful number, since it uses less digits than its factorization.

478487386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13485.

The product of its digits is 7225344, while the sum is 55.

The square root of 478487386 is about 21874.3545276198. The cubic root of 478487386 is about 782.1502067327.

The spelling of 478487386 in words is "four hundred seventy-eight million, four hundred eighty-seven thousand, three hundred eighty-six".