478738461 has 8 divisors (see below), whose sum is σ = 639298080. Its totient is φ = 318668912.

The previous prime is 478738457. The next prime is 478738471. The reversal of 478738461 is 164837874.

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

It is a cyclic number.

It is not a de Polignac number, because 478738461 - 2² = 478738457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 478738461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478738451) 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, 120231 + ... + 124148.

It is an arithmetic number, because the mean of its divisors is an integer number (79912260).

Almost surely, 2^478738461 is an apocalyptic number.

It is an amenable number.

478738461 is a deficient number, since it is larger than the sum of its proper divisors (160559619).

478738461 is a wasteful number, since it uses less digits than its factorization.

478738461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245035.

The product of its digits is 903168, while the sum is 48.

The square root of 478738461 is about 21880.0928014485. The cubic root of 478738461 is about 782.2869877852.

The spelling of 478738461 in words is "four hundred seventy-eight million, seven hundred thirty-eight thousand, four hundred sixty-one".