478289423 has 4 divisors (see below), whose sum is σ = 480932088. Its totient is φ = 475646760.

The previous prime is 478289419. The next prime is 478289479. The reversal of 478289423 is 324982874.

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 478289423 - 2² = 478289419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478289023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1321061 + ... + 1321422.

It is an arithmetic number, because the mean of its divisors is an integer number (120233022).

Almost surely, 2^478289423 is an apocalyptic number.

478289423 is a deficient number, since it is larger than the sum of its proper divisors (2642665).

478289423 is a wasteful number, since it uses less digits than its factorization.

478289423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2642664.

The product of its digits is 774144, while the sum is 47.

The square root of 478289423 is about 21869.8290574023. The cubic root of 478289423 is about 782.0423263829.

The spelling of 478289423 in words is "four hundred seventy-eight million, two hundred eighty-nine thousand, four hundred twenty-three".