478609415 has 16 divisors (see below), whose sum is σ = 634557888. Its totient is φ = 344695296.

The previous prime is 478609409. The next prime is 478609421. The reversal of 478609415 is 514906874.

It is an interprime number because it is at equal distance from previous prime (478609409) and next prime (478609421).

It is not a de Polignac number, because 478609415 - 2⁴ = 478609399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120452 + ... + 124361.

It is an arithmetic number, because the mean of its divisors is an integer number (39659868).

Almost surely, 2^478609415 is an apocalyptic number.

478609415 is a deficient number, since it is larger than the sum of its proper divisors (155948473).

478609415 is a wasteful number, since it uses less digits than its factorization.

478609415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244858.

The product of its (nonzero) digits is 241920, while the sum is 44.

The square root of 478609415 is about 21877.1436663930. The cubic root of 478609415 is about 782.2166918674.

It can be divided in two parts, 47860 and 9415, that added together give a palindrome (57275).

The spelling of 478609415 in words is "four hundred seventy-eight million, six hundred nine thousand, four hundred fifteen".