478383817 has 4 divisors (see below), whose sum is σ = 478437120. Its totient is φ = 478330516.

The previous prime is 478383803. The next prime is 478383821. The reversal of 478383817 is 718383874.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-478383817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478383617) 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, 9517 + ... + 32362.

It is an arithmetic number, because the mean of its divisors is an integer number (119609280).

Almost surely, 2^478383817 is an apocalyptic number.

It is an amenable number.

478383817 is a deficient number, since it is larger than the sum of its proper divisors (53303).

478383817 is a wasteful number, since it uses less digits than its factorization.

478383817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53302.

The product of its digits is 903168, while the sum is 49.

The square root of 478383817 is about 21871.9870382185. The cubic root of 478383817 is about 782.0937703023.

The spelling of 478383817 in words is "four hundred seventy-eight million, three hundred eighty-three thousand, eight hundred seventeen".