478749 has 8 divisors (see below), whose sum is σ = 650592. Its totient is φ = 313040.

The previous prime is 478747. The next prime is 478763. The reversal of 478749 is 947874.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 478749 - 2¹ = 478747 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1347 + ... + 1664.

It is an arithmetic number, because the mean of its divisors is an integer number (81324).

2⁴⁷⁸⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

478749 is a deficient number, since it is larger than the sum of its proper divisors (171843).

478749 is a wasteful number, since it uses less digits than its factorization.

478749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3067.

The product of its digits is 56448, while the sum is 39.

The square root of 478749 is about 691.9169025252. The cubic root of 478749 is about 78.2292728193.

The spelling of 478749 in words is "four hundred seventy-eight thousand, seven hundred forty-nine".