384747845 has 8 divisors (see below), whose sum is σ = 463069464. Its totient is φ = 306883584.

The previous prime is 384747827. The next prime is 384747863. The reversal of 384747845 is 548747483.

It is an interprime number because it is at equal distance from previous prime (384747827) and next prime (384747863).

It can be written as a sum of positive squares in 4 ways, for example, as 15108769 + 369639076 = 3887^2 + 19226^2 .

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 384747845 - 2⁸ = 384747589 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 384747793 and 384747802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112484 + ... + 115853.

It is an arithmetic number, because the mean of its divisors is an integer number (57883683).

Almost surely, 2^384747845 is an apocalyptic number.

It is an amenable number.

384747845 is a deficient number, since it is larger than the sum of its proper divisors (78321619).

384747845 is a wasteful number, since it uses less digits than its factorization.

384747845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228679.

The product of its digits is 3010560, while the sum is 50.

The square root of 384747845 is about 19614.9903135332. The cubic root of 384747845 is about 727.3197799553.

The spelling of 384747845 in words is "three hundred eighty-four million, seven hundred forty-seven thousand, eight hundred forty-five".