478440373 has 2 divisors, whose sum is σ = 478440374. Its totient is φ = 478440372.

The previous prime is 478440343. The next prime is 478440379. The reversal of 478440373 is 373044874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 348867684 + 129572689 = 18678^2 + 11383^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478440373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478440379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239220186 + 239220187.

It is an arithmetic number, because the mean of its divisors is an integer number (239220187).

Almost surely, 2^478440373 is an apocalyptic number.

It is an amenable number.

478440373 is a deficient number, since it is larger than the sum of its proper divisors (1).

478440373 is an equidigital number, since it uses as much as digits as its factorization.

478440373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 40.

The square root of 478440373 is about 21873.2798866562. The cubic root of 478440373 is about 782.1245895948.

The spelling of 478440373 in words is "four hundred seventy-eight million, four hundred forty thousand, three hundred seventy-three".