478872149 has 6 divisors (see below), whose sum is σ = 557055414. Its totient is φ = 410461800.

The previous prime is 478872139. The next prime is 478872161. The reversal of 478872149 is 941278874.

It can be written as a sum of positive squares in only one way, i.e., 448677124 + 30195025 = 21182^2 + 5495^2 .

It is not a de Polignac number, because 478872149 - 2⁸ = 478871893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 478872097 and 478872106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478872109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4886402 + ... + 4886499.

It is an arithmetic number, because the mean of its divisors is an integer number (92842569).

Almost surely, 2^478872149 is an apocalyptic number.

478872149 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

478872149 is a deficient number, since it is larger than the sum of its proper divisors (78183265).

478872149 is an equidigital number, since it uses as much as digits as its factorization.

478872149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9772915 (or 9772908 counting only the distinct ones).

The product of its digits is 903168, while the sum is 50.

The square root of 478872149 is about 21883.1476026645. The cubic root of 478872149 is about 782.3597990437.

The spelling of 478872149 in words is "four hundred seventy-eight million, eight hundred seventy-two thousand, one hundred forty-nine".