478880407 has 4 divisors (see below), whose sum is σ = 479518816. Its totient is φ = 478242000.

The previous prime is 478880377. The next prime is 478880417. The reversal of 478880407 is 704088874.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 704088874 = 2 ⋅352044437.

It is a cyclic number.

It is not a de Polignac number, because 478880407 - 2⁷ = 478880279 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 (478880417) 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, 318078 + ... + 319579.

It is an arithmetic number, because the mean of its divisors is an integer number (119879704).

Almost surely, 2^478880407 is an apocalyptic number.

478880407 is a deficient number, since it is larger than the sum of its proper divisors (638409).

478880407 is an equidigital number, since it uses as much as digits as its factorization.

478880407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638408.

The product of its (nonzero) digits is 401408, while the sum is 46.

The square root of 478880407 is about 21883.3362858592. The cubic root of 478880407 is about 782.3642962009.

The spelling of 478880407 in words is "four hundred seventy-eight million, eight hundred eighty thousand, four hundred seven".