478137229 has 2 divisors, whose sum is σ = 478137230. Its totient is φ = 478137228.

The previous prime is 478137197. The next prime is 478137263. The reversal of 478137229 is 922731874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 400080004 + 78057225 = 20002^2 + 8835^2 .

It is a cyclic number.

It is not a de Polignac number, because 478137229 - 2⁵ = 478137197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478137029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239068614 + 239068615.

It is an arithmetic number, because the mean of its divisors is an integer number (239068615).

Almost surely, 2^478137229 is an apocalyptic number.

It is an amenable number.

478137229 is a deficient number, since it is larger than the sum of its proper divisors (1).

478137229 is an equidigital number, since it uses as much as digits as its factorization.

478137229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 43.

The square root of 478137229 is about 21866.3492380415. The cubic root of 478137229 is about 781.9593677037.

The spelling of 478137229 in words is "four hundred seventy-eight million, one hundred thirty-seven thousand, two hundred twenty-nine".