478949873 has 4 divisors (see below), whose sum is σ = 480330480. Its totient is φ = 477569268.

The previous prime is 478949839. The next prime is 478949879. The reversal of 478949873 is 378949874.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 478949873 - 2²⁴ = 462172657 is a prime.

It is a super-2 number, since 2×478949873² = 458785961693432258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478949879) 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, 689783 + ... + 690476.

It is an arithmetic number, because the mean of its divisors is an integer number (120082620).

Almost surely, 2^478949873 is an apocalyptic number.

It is an amenable number.

478949873 is a deficient number, since it is larger than the sum of its proper divisors (1380607).

478949873 is a wasteful number, since it uses less digits than its factorization.

478949873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380606.

The product of its digits is 12192768, while the sum is 59.

The square root of 478949873 is about 21884.9234177321. The cubic root of 478949873 is about 782.4021240801.

Subtracting from 478949873 its reverse (378949874), we obtain a palindrome (99999999).

The spelling of 478949873 in words is "four hundred seventy-eight million, nine hundred forty-nine thousand, eight hundred seventy-three".