478464531 has 8 divisors (see below), whose sum is σ = 642823104. Its totient is φ = 316541160.

The previous prime is 478464529. The next prime is 478464587. The reversal of 478464531 is 135464874.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 478464531 - 2¹ = 478464529 is a prime.

It is a super-2 number, since 2×478464531² = 457856614850099922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (478464521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 608341 + ... + 609126.

It is an arithmetic number, because the mean of its divisors is an integer number (80352888).

Almost surely, 2^478464531 is an apocalyptic number.

478464531 is a deficient number, since it is larger than the sum of its proper divisors (164358573).

478464531 is a wasteful number, since it uses less digits than its factorization.

478464531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217601.

The product of its digits is 322560, while the sum is 42.

The square root of 478464531 is about 21873.8321059663. The cubic root of 478464531 is about 782.1377533723.

The spelling of 478464531 in words is "four hundred seventy-eight million, four hundred sixty-four thousand, five hundred thirty-one".