478249 has 4 divisors (see below), whose sum is σ = 503440. Its totient is φ = 453060.

The previous prime is 478243. The next prime is 478253. The reversal of 478249 is 942874.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 478249 - 2³ = 478241 is a prime.

It is a Duffinian number.

478249 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (478241) 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, 12567 + ... + 12604.

It is an arithmetic number, because the mean of its divisors is an integer number (125860).

2⁴⁷⁸²⁴⁹ is an apocalyptic number.

It is an amenable number.

478249 is a deficient number, since it is larger than the sum of its proper divisors (25191).

478249 is a wasteful number, since it uses less digits than its factorization.

478249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25190.

The product of its digits is 16128, while the sum is 34.

The square root of 478249 is about 691.5554930734. Note that the first 3 decimals coincide. The cubic root of 478249 is about 78.2020294125.

It can be divided in two parts, 478 and 249, that added together give a palindrome (727).

The spelling of 478249 in words is "four hundred seventy-eight thousand, two hundred forty-nine".