478027439 has 4 divisors (see below), whose sum is σ = 478218840. Its totient is φ = 477836040.

The previous prime is 478027421. The next prime is 478027447. The reversal of 478027439 is 934720874.

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 478027439 - 2¹⁶ = 477961903 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 478027439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478027489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91904 + ... + 96965.

It is an arithmetic number, because the mean of its divisors is an integer number (119554710).

Almost surely, 2^478027439 is an apocalyptic number.

478027439 is a deficient number, since it is larger than the sum of its proper divisors (191401).

478027439 is a wasteful number, since it uses less digits than its factorization.

478027439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191400.

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 478027439 is about 21863.8386153941. The cubic root of 478027439 is about 781.8995118815.

The spelling of 478027439 in words is "four hundred seventy-eight million, twenty-seven thousand, four hundred thirty-nine".