478765393 has 16 divisors (see below), whose sum is σ = 494164800. Its totient is φ = 463682880.

The previous prime is 478765369. The next prime is 478765403. The reversal of 478765393 is 393567874.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 478765393 - 2⁵ = 478765361 is a prime.

It is a Duffinian number.

Its product of digits (3810240) is a multiple of the sum of its prime divisors (672).

It is a self number, because there is not a number n which added to its sum of digits gives 478765393.

It is not an unprimeable number, because it can be changed into a prime (478765093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1779663 + ... + 1779931.

It is an arithmetic number, because the mean of its divisors is an integer number (30885300).

Almost surely, 2^478765393 is an apocalyptic number.

It is an amenable number.

478765393 is a deficient number, since it is larger than the sum of its proper divisors (15399407).

478765393 is a wasteful number, since it uses less digits than its factorization.

478765393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672.

The product of its digits is 3810240, while the sum is 52.

The square root of 478765393 is about 21880.7082380804. The cubic root of 478765393 is about 782.3016570043.

The spelling of 478765393 in words is "four hundred seventy-eight million, seven hundred sixty-five thousand, three hundred ninety-three".