384213229 has 6 divisors (see below), whose sum is σ = 401645006. Its totient is φ = 367507800.

The previous prime is 384213211. The next prime is 384213233. The reversal of 384213229 is 922312483.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 224190729 + 160022500 = 14973^2 + 12650^2 .

It is not a de Polignac number, because 384213229 - 2¹¹ = 384211181 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 384213194 and 384213203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384213259) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 362622 + ... + 363679.

Almost surely, 2^384213229 is an apocalyptic number.

It is an amenable number.

384213229 is a deficient number, since it is larger than the sum of its proper divisors (17431777).

384213229 is an equidigital number, since it uses as much as digits as its factorization.

384213229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726347 (or 726324 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 384213229 is about 19601.3578356194. The cubic root of 384213229 is about 726.9827479355.

It can be divided in two parts, 3842 and 13229, that added together give a palindrome (17071).

The spelling of 384213229 in words is "three hundred eighty-four million, two hundred thirteen thousand, two hundred twenty-nine".