384145 has 4 divisors (see below), whose sum is σ = 460980. Its totient is φ = 307312.

The previous prime is 384143. The next prime is 384151. The reversal of 384145 is 541483.

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 295936 + 88209 = 544^2 + 297^2 .

It is a cyclic number.

It is not a de Polignac number, because 384145 - 2¹ = 384143 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (384143) 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, 38410 + ... + 38419.

It is an arithmetic number, because the mean of its divisors is an integer number (115245).

2³⁸⁴¹⁴⁵ is an apocalyptic number.

It is an amenable number.

384145 is a deficient number, since it is larger than the sum of its proper divisors (76835).

384145 is an equidigital number, since it uses as much as digits as its factorization.

384145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76834.

The product of its digits is 1920, while the sum is 25.

The square root of 384145 is about 619.7943207226. The cubic root of 384145 is about 72.6939712594.

It can be divided in two parts, 384 and 145, that added together give a square (529 = 23²).

The spelling of 384145 in words is "three hundred eighty-four thousand, one hundred forty-five".