478900507 has 4 divisors (see below), whose sum is σ = 479071800. Its totient is φ = 478729216.

The previous prime is 478900501. The next prime is 478900517. The reversal of 478900507 is 705009874.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478900507 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 478900507.

It is not an unprimeable number, because it can be changed into a prime (478900501) 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, 81382 + ... + 87067.

It is an arithmetic number, because the mean of its divisors is an integer number (119767950).

Almost surely, 2^478900507 is an apocalyptic number.

478900507 is a deficient number, since it is larger than the sum of its proper divisors (171293).

478900507 is a wasteful number, since it uses less digits than its factorization.

478900507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171292.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 478900507 is about 21883.7955345959. The cubic root of 478900507 is about 782.3752420809.

The spelling of 478900507 in words is "four hundred seventy-eight million, nine hundred thousand, five hundred seven".