478123207 has 4 divisors (see below), whose sum is σ = 478192840. Its totient is φ = 478053576.

The previous prime is 478123153. The next prime is 478123237. The reversal of 478123207 is 702321874.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 702321874 = 2 ⋅351160937.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478123207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478123237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23232 + ... + 38677.

It is an arithmetic number, because the mean of its divisors is an integer number (119548210).

Almost surely, 2^478123207 is an apocalyptic number.

478123207 is a deficient number, since it is larger than the sum of its proper divisors (69633).

478123207 is an equidigital number, since it uses as much as digits as its factorization.

478123207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69632.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 478123207 is about 21866.0286060364. The cubic root of 478123207 is about 781.9517236350.

The spelling of 478123207 in words is "four hundred seventy-eight million, one hundred twenty-three thousand, two hundred seven".