478091417 has 2 divisors, whose sum is σ = 478091418. Its totient is φ = 478091416.

The previous prime is 478091413. The next prime is 478091483. The reversal of 478091417 is 714190874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 471063616 + 7027801 = 21704^2 + 2651^2 .

It is a cyclic number.

It is not a de Polignac number, because 478091417 - 2² = 478091413 is a prime.

It is not a weakly prime, because it can be changed into another prime (478091413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239045708 + 239045709.

It is an arithmetic number, because the mean of its divisors is an integer number (239045709).

Almost surely, 2^478091417 is an apocalyptic number.

It is an amenable number.

478091417 is a deficient number, since it is larger than the sum of its proper divisors (1).

478091417 is an equidigital number, since it uses as much as digits as its factorization.

478091417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 478091417 is about 21865.3016672535. The cubic root of 478091417 is about 781.9343928188.

The spelling of 478091417 in words is "four hundred seventy-eight million, ninety-one thousand, four hundred seventeen".