478654971 has 4 divisors (see below), whose sum is σ = 638206632. Its totient is φ = 319103312.

The previous prime is 478654963. The next prime is 478654991. The reversal of 478654971 is 179456874.

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 478654971 - 2³ = 478654963 is a prime.

It is a super-2 number, since 2×478654971² = 458221162526021682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (478654921) 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, 79775826 + ... + 79775831.

It is an arithmetic number, because the mean of its divisors is an integer number (159551658).

Almost surely, 2^478654971 is an apocalyptic number.

478654971 is a deficient number, since it is larger than the sum of its proper divisors (159551661).

478654971 is a wasteful number, since it uses less digits than its factorization.

478654971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159551660.

The product of its digits is 1693440, while the sum is 51.

The square root of 478654971 is about 21878.1848195868. The cubic root of 478654971 is about 782.2415092738.

The spelling of 478654971 in words is "four hundred seventy-eight million, six hundred fifty-four thousand, nine hundred seventy-one".