478949 has 4 divisors (see below), whose sum is σ = 480480. Its totient is φ = 477420.

The previous prime is 478943. The next prime is 478963. The reversal of 478949 is 949874.

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, and also an emirpimes, since its reverse is a distinct semiprime: 949874 = 2 ⋅474937.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478949 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478943) 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, 107 + ... + 984.

It is an arithmetic number, because the mean of its divisors is an integer number (120120).

2⁴⁷⁸⁹⁴⁹ is an apocalyptic number.

It is an amenable number.

478949 is a deficient number, since it is larger than the sum of its proper divisors (1531).

478949 is a wasteful number, since it uses less digits than its factorization.

478949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530.

The product of its digits is 72576, while the sum is 41.

The square root of 478949 is about 692.0614134598. The cubic root of 478949 is about 78.2401648709.

The spelling of 478949 in words is "four hundred seventy-eight thousand, nine hundred forty-nine".