478416385 has 8 divisors (see below), whose sum is σ = 580550760. Its totient is φ = 378432384.

The previous prime is 478416361. The next prime is 478416403. The reversal of 478416385 is 583614874.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 57017601 + 421398784 = 7551^2 + 20528^2 .

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 478416385 - 2¹⁵ = 478383617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 537102 + ... + 537991.

It is an arithmetic number, because the mean of its divisors is an integer number (72568845).

Almost surely, 2^478416385 is an apocalyptic number.

It is an amenable number.

478416385 is a deficient number, since it is larger than the sum of its proper divisors (102134375).

478416385 is a wasteful number, since it uses less digits than its factorization.

478416385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075187.

The product of its digits is 645120, while the sum is 46.

The square root of 478416385 is about 21872.7315395220. The cubic root of 478416385 is about 782.1115180124. Note that the first 3 decimals are identical.

The spelling of 478416385 in words is "four hundred seventy-eight million, four hundred sixteen thousand, three hundred eighty-five".