478372403 has 2 divisors, whose sum is σ = 478372404. Its totient is φ = 478372402.

The previous prime is 478372399. The next prime is 478372457. The reversal of 478372403 is 304273874.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 478372403 - 2² = 478372399 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (478372483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239186201 + 239186202.

It is an arithmetic number, because the mean of its divisors is an integer number (239186202).

Almost surely, 2^478372403 is an apocalyptic number.

478372403 is a deficient number, since it is larger than the sum of its proper divisors (1).

478372403 is an equidigital number, since it uses as much as digits as its factorization.

478372403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 38.

The square root of 478372403 is about 21871.7261092946. The cubic root of 478372403 is about 782.0875501300.

The spelling of 478372403 in words is "four hundred seventy-eight million, three hundred seventy-two thousand, four hundred three".