478089785 has 4 divisors (see below), whose sum is σ = 573707748. Its totient is φ = 382471824.

The previous prime is 478089763. The next prime is 478089791. The reversal of 478089785 is 587980874.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86564416 + 391525369 = 9304^2 + 19787^2 .

It is a cyclic number.

It is not a de Polignac number, because 478089785 - 2¹⁰ = 478088761 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 478089785.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47808974 + ... + 47808983.

It is an arithmetic number, because the mean of its divisors is an integer number (143426937).

Almost surely, 2^478089785 is an apocalyptic number.

It is an amenable number.

478089785 is a deficient number, since it is larger than the sum of its proper divisors (95617963).

478089785 is an equidigital number, since it uses as much as digits as its factorization.

478089785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95617962.

The product of its (nonzero) digits is 4515840, while the sum is 56.

The square root of 478089785 is about 21865.2643478189. The cubic root of 478089785 is about 781.9335030877.

It can be divided in two parts, 478089 and 785, that added together give a palindrome (478874).

The spelling of 478089785 in words is "four hundred seventy-eight million, eighty-nine thousand, seven hundred eighty-five".