384617213 has 2 divisors, whose sum is σ = 384617214. Its totient is φ = 384617212.

The previous prime is 384617147. The next prime is 384617263. The reversal of 384617213 is 312716483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 355435609 + 29181604 = 18853^2 + 5402^2 .

It is a cyclic number.

It is not a de Polignac number, because 384617213 - 2¹⁶ = 384551677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (384617263) 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, 192308606 + 192308607.

It is an arithmetic number, because the mean of its divisors is an integer number (192308607).

Almost surely, 2^384617213 is an apocalyptic number.

It is an amenable number.

384617213 is a deficient number, since it is larger than the sum of its proper divisors (1).

384617213 is an equidigital number, since it uses as much as digits as its factorization.

384617213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 384617213 is about 19611.6601286072. The cubic root of 384617213 is about 727.2374559140.

The spelling of 384617213 in words is "three hundred eighty-four million, six hundred seventeen thousand, two hundred thirteen".