Search a number
-
+
389847341 = 1322937873
BaseRepresentation
bin10111001111001…
…001100100101101
31000011120022000102
4113033021210231
51244300103331
6102403440445
712442435112
oct2717114455
91004508012
10389847341
11190071094
12aa686125
13629c8400
1439ac0909
152435a4cb
hex173c992d

389847341 has 12 divisors (see below), whose sum is σ = 423636948. Its totient is φ = 358585344.

The previous prime is 389847313. The next prime is 389847373. The reversal of 389847341 is 143748983.

It can be written as a sum of positive squares in 6 ways, for example, as 64802500 + 325044841 = 8050^2 + 18029^2 .

It is not a de Polignac number, because 389847341 - 214 = 389830957 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

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 (389847391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45581 + ... + 53453.

It is an arithmetic number, because the mean of its divisors is an integer number (35303079).

Almost surely, 2389847341 is an apocalyptic number.

It is an amenable number.

389847341 is a deficient number, since it is larger than the sum of its proper divisors (33789607).

389847341 is a wasteful number, since it uses less digits than its factorization.

389847341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8192 (or 8179 counting only the distinct ones).

The product of its digits is 580608, while the sum is 47.

The square root of 389847341 is about 19744.5521853498. The cubic root of 389847341 is about 730.5190160275.

The spelling of 389847341 in words is "three hundred eighty-nine million, eight hundred forty-seven thousand, three hundred forty-one".

Divisors: 1 13 169 293 3809 7873 49517 102349 1330537 2306789 29988257 389847341