384813761 has 8 divisors (see below), whose sum is σ = 394350120. Its totient is φ = 375361792.

The previous prime is 384813749. The next prime is 384813809. The reversal of 384813761 is 167318483.

It can be written as a sum of positive squares in 4 ways, for example, as 158130625 + 226683136 = 12575^2 + 15056^2 .

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 384813761 - 2⁶ = 384813697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (384413761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11816 + ... + 30153.

It is an arithmetic number, because the mean of its divisors is an integer number (49293765).

Almost surely, 2^384813761 is an apocalyptic number.

It is an amenable number.

384813761 is a deficient number, since it is larger than the sum of its proper divisors (9536359).

384813761 is a wasteful number, since it uses less digits than its factorization.

384813761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42195.

The product of its digits is 96768, while the sum is 41.

The square root of 384813761 is about 19616.6704871138. The cubic root of 384813761 is about 727.3613130214.

The spelling of 384813761 in words is "three hundred eighty-four million, eight hundred thirteen thousand, seven hundred sixty-one".