478672949 has 2 divisors, whose sum is σ = 478672950. Its totient is φ = 478672948.

The previous prime is 478672937. The next prime is 478672963. The reversal of 478672949 is 949276874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 447111025 + 31561924 = 21145^2 + 5618^2 .

It is a cyclic number.

It is not a de Polignac number, because 478672949 - 2⁴ = 478672933 is a prime.

It is a super-3 number, since 3×478672949³ (a number of 27 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 478672894 and 478672903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478672969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239336474 + 239336475.

It is an arithmetic number, because the mean of its divisors is an integer number (239336475).

Almost surely, 2^478672949 is an apocalyptic number.

It is an amenable number.

478672949 is a deficient number, since it is larger than the sum of its proper divisors (1).

478672949 is an equidigital number, since it uses as much as digits as its factorization.

478672949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6096384, while the sum is 56.

The square root of 478672949 is about 21878.5956816245. The cubic root of 478672949 is about 782.2513026619.

The spelling of 478672949 in words is "four hundred seventy-eight million, six hundred seventy-two thousand, nine hundred forty-nine".