478383439 has 4 divisors (see below), whose sum is σ = 478460656. Its totient is φ = 478306224.

The previous prime is 478383419. The next prime is 478383457. The reversal of 478383439 is 934383874.

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

It is a cyclic number.

It is not a de Polignac number, because 478383439 - 2¹⁵ = 478350671 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 478383392 and 478383401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478383419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28419 + ... + 42004.

It is an arithmetic number, because the mean of its divisors is an integer number (119615164).

Almost surely, 2^478383439 is an apocalyptic number.

478383439 is a deficient number, since it is larger than the sum of its proper divisors (77217).

478383439 is an equidigital number, since it uses as much as digits as its factorization.

478383439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77216.

The product of its digits is 1741824, while the sum is 49.

The square root of 478383439 is about 21871.9783970266. The cubic root of 478383439 is about 782.0935643091.

The spelling of 478383439 in words is "four hundred seventy-eight million, three hundred eighty-three thousand, four hundred thirty-nine".