478355407 has 2 divisors, whose sum is σ = 478355408. Its totient is φ = 478355406.

The previous prime is 478355399. The next prime is 478355413. The reversal of 478355407 is 704553874.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 478355407 - 2³ = 478355399 is a prime.

It is a super-2 number, since 2×478355407² = 457647790812271298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478355417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239177703 + 239177704.

It is an arithmetic number, because the mean of its divisors is an integer number (239177704).

Almost surely, 2^478355407 is an apocalyptic number.

478355407 is a deficient number, since it is larger than the sum of its proper divisors (1).

478355407 is an equidigital number, since it uses as much as digits as its factorization.

478355407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 470400, while the sum is 43.

The square root of 478355407 is about 21871.3375676935. The cubic root of 478355407 is about 782.0782878082.

The spelling of 478355407 in words is "four hundred seventy-eight million, three hundred fifty-five thousand, four hundred seven".