385247 has 4 divisors (see below), whose sum is σ = 387456. Its totient is φ = 383040.

The previous prime is 385223. The next prime is 385249. The reversal of 385247 is 742583.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 742583 = 53 ⋅14011.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385247 is a prime.

It is a d-powerful number, because it can be written as 3⁶ + 8⁴ + 2¹⁸ + 5⁴ + 4 + 7⁶ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385249) 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, 818 + ... + 1199.

It is an arithmetic number, because the mean of its divisors is an integer number (96864).

2³⁸⁵²⁴⁷ is an apocalyptic number.

385247 is a deficient number, since it is larger than the sum of its proper divisors (2209).

385247 is a wasteful number, since it uses less digits than its factorization.

385247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208.

The product of its digits is 6720, while the sum is 29.

The square root of 385247 is about 620.6826886582. The cubic root of 385247 is about 72.7634174974.

The spelling of 385247 in words is "three hundred eighty-five thousand, two hundred forty-seven".