478578629 has 2 divisors, whose sum is σ = 478578630. Its totient is φ = 478578628.

The previous prime is 478578599. The next prime is 478578637. The reversal of 478578629 is 926875874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 472192900 + 6385729 = 21730^2 + 2527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478578629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478578689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239289314 + 239289315.

It is an arithmetic number, because the mean of its divisors is an integer number (239289315).

Almost surely, 2^478578629 is an apocalyptic number.

It is an amenable number.

478578629 is a deficient number, since it is larger than the sum of its proper divisors (1).

478578629 is an equidigital number, since it uses as much as digits as its factorization.

478578629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6773760, while the sum is 56.

The square root of 478578629 is about 21876.4400440291. The cubic root of 478578629 is about 782.1999197782.

The spelling of 478578629 in words is "four hundred seventy-eight million, five hundred seventy-eight thousand, six hundred twenty-nine".