478839213 has 24 divisors (see below), whose sum is σ = 717600000. Its totient is φ = 307317024.

The previous prime is 478839209. The next prime is 478839217. The reversal of 478839213 is 312938874.

478839213 is a `hidden beast` number, since 478 + 83 + 92 + 13 = 666.

It is an interprime number because it is at equal distance from previous prime (478839209) and next prime (478839217).

It is not a de Polignac number, because 478839213 - 2² = 478839209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478839217) 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 23 ways as a sum of consecutive naturals, for example, 93288 + ... + 98286.

It is an arithmetic number, because the mean of its divisors is an integer number (29900000).

Almost surely, 2^478839213 is an apocalyptic number.

It is an amenable number.

478839213 is a deficient number, since it is larger than the sum of its proper divisors (238760787).

478839213 is a wasteful number, since it uses less digits than its factorization.

478839213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5401 (or 5398 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 478839213 is about 21882.3950471606. The cubic root of 478839213 is about 782.3418621802.

The spelling of 478839213 in words is "four hundred seventy-eight million, eight hundred thirty-nine thousand, two hundred thirteen".