478307807 has 4 divisors (see below), whose sum is σ = 479727456. Its totient is φ = 476888160.

The previous prime is 478307789. The next prime is 478307813. The reversal of 478307807 is 708703874.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 478307807 - 2⁶ = 478307743 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 (478307827) 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, 709319 + ... + 709992.

It is an arithmetic number, because the mean of its divisors is an integer number (119931864).

Almost surely, 2^478307807 is an apocalyptic number.

478307807 is a deficient number, since it is larger than the sum of its proper divisors (1419649).

478307807 is a wasteful number, since it uses less digits than its factorization.

478307807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419648.

The product of its (nonzero) digits is 263424, while the sum is 44.

The square root of 478307807 is about 21870.2493584321. The cubic root of 478307807 is about 782.0523460358.

The spelling of 478307807 in words is "four hundred seventy-eight million, three hundred seven thousand, eight hundred seven".