478438061 has 4 divisors (see below), whose sum is σ = 490107324. Its totient is φ = 466768800.

The previous prime is 478438057. The next prime is 478438109. The reversal of 478438061 is 160834874.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 160834874 = 2 ⋅80417437.

It can be written as a sum of positive squares in 2 ways, for example, as 19193161 + 459244900 = 4381^2 + 21430^2 .

It is a cyclic number.

It is not a de Polignac number, because 478438061 - 2² = 478438057 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 11669221 = 478438061 / (4 + 7 + 8 + 4 + 3 + 8 + 0 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478438561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5834570 + ... + 5834651.

It is an arithmetic number, because the mean of its divisors is an integer number (122526831).

Almost surely, 2^478438061 is an apocalyptic number.

478438061 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

478438061 is a deficient number, since it is larger than the sum of its proper divisors (11669263).

478438061 is a wasteful number, since it uses less digits than its factorization.

478438061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11669262.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 478438061 is about 21873.2270367223. The cubic root of 478438061 is about 782.1233297548.

The spelling of 478438061 in words is "four hundred seventy-eight million, four hundred thirty-eight thousand, sixty-one".