478134438 has 8 divisors (see below), whose sum is σ = 956268888. Its totient is φ = 159378144.

The previous prime is 478134427. The next prime is 478134439. The reversal of 478134438 is 834431874.

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

478134438 is an admirable number.

It is a super-2 number, since 2×478134438² = 457225081603151688, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 478134438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478134439) 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, 39844531 + ... + 39844542.

It is an arithmetic number, because the mean of its divisors is an integer number (119533611).

Almost surely, 2^478134438 is an apocalyptic number.

478134438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

478134438 is a wasteful number, since it uses less digits than its factorization.

478134438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79689078.

The product of its digits is 258048, while the sum is 42.

The square root of 478134438 is about 21866.2854184244. The cubic root of 478134438 is about 781.9578462068.

The spelling of 478134438 in words is "four hundred seventy-eight million, one hundred thirty-four thousand, four hundred thirty-eight".