384813749 has 2 divisors, whose sum is σ = 384813750. Its totient is φ = 384813748.

The previous prime is 384813739. The next prime is 384813809. The reversal of 384813749 is 947318483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 331786225 + 53027524 = 18215^2 + 7282^2 .

It is an emirp because it is prime and its reverse (947318483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 384813749 - 2¹⁶ = 384748213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (384813739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192406874 + 192406875.

It is an arithmetic number, because the mean of its divisors is an integer number (192406875).

Almost surely, 2^384813749 is an apocalyptic number.

It is an amenable number.

384813749 is a deficient number, since it is larger than the sum of its proper divisors (1).

384813749 is an equidigital number, since it uses as much as digits as its factorization.

384813749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 47.

The square root of 384813749 is about 19616.6701812515. The cubic root of 384813749 is about 727.3613054607.

The spelling of 384813749 in words is "three hundred eighty-four million, eight hundred thirteen thousand, seven hundred forty-nine".