384427213 has 4 divisors (see below), whose sum is σ = 384468480. Its totient is φ = 384385948.

The previous prime is 384427207. The next prime is 384427231. The reversal of 384427213 is 312724483.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 384427213 - 2²¹ = 382330061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384427913) 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 3 ways as a sum of consecutive naturals, for example, 678 + ... + 27736.

It is an arithmetic number, because the mean of its divisors is an integer number (96117120).

Almost surely, 2^384427213 is an apocalyptic number.

It is an amenable number.

384427213 is a deficient number, since it is larger than the sum of its proper divisors (41267).

384427213 is a wasteful number, since it uses less digits than its factorization.

384427213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41266.

The product of its digits is 32256, while the sum is 34.

The square root of 384427213 is about 19606.8154731971. The cubic root of 384427213 is about 727.1176849911.

The spelling of 384427213 in words is "three hundred eighty-four million, four hundred twenty-seven thousand, two hundred thirteen".