478961137 has 2 divisors, whose sum is σ = 478961138. Its totient is φ = 478961136.

The previous prime is 478961113. The next prime is 478961143. The reversal of 478961137 is 731169874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 372644416 + 106316721 = 19304^2 + 10311^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478961137 is a prime.

It is not a weakly prime, because it can be changed into another prime (478961107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239480568 + 239480569.

It is an arithmetic number, because the mean of its divisors is an integer number (239480569).

Almost surely, 2^478961137 is an apocalyptic number.

It is an amenable number.

478961137 is a deficient number, since it is larger than the sum of its proper divisors (1).

478961137 is an equidigital number, since it uses as much as digits as its factorization.

478961137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 478961137 is about 21885.1807623332. The cubic root of 478961137 is about 782.4082575741.

The spelling of 478961137 in words is "four hundred seventy-eight million, nine hundred sixty-one thousand, one hundred thirty-seven".