384250685309 has 4 divisors (see below), whose sum is σ = 394635839004. Its totient is φ = 373865531616.

The previous prime is 384250685297. The next prime is 384250685311. The reversal of 384250685309 is 903586052483.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 144459286084 + 239791399225 = 380078^2 + 489685^2 .

It is a cyclic number.

It is not a de Polignac number, because 384250685309 - 2⁸ = 384250685053 is a prime.

It is a super-2 number, since 2×384250685309² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384250688309) 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, 5192576792 + ... + 5192576865.

It is an arithmetic number, because the mean of its divisors is an integer number (98658959751).

Almost surely, 2^384250685309 is an apocalyptic number.

It is an amenable number.

384250685309 is a deficient number, since it is larger than the sum of its proper divisors (10385153695).

384250685309 is a wasteful number, since it uses less digits than its factorization.

384250685309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10385153694.

The product of its (nonzero) digits is 6220800, while the sum is 53.

The spelling of 384250685309 in words is "three hundred eighty-four billion, two hundred fifty million, six hundred eighty-five thousand, three hundred nine".