Search a number
-
+
47936349 = 3237143953
BaseRepresentation
bin1011011011011…
…1001101011101
310100012102022100
42312313031131
544232430344
64431235313
71121311056
oct266671535
9110172270
1047936349
112507131a
1214078b39
139c15006
14651b72d
15431d569
hex2db735d

47936349 has 12 divisors (see below), whose sum is σ = 71113276. Its totient is φ = 31093632.

The previous prime is 47936279. The next prime is 47936351. The reversal of 47936349 is 94363974.

47936349 is a `hidden beast` number, since 4 + 7 + 9 + 3 + 634 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19740249 + 28196100 = 4443^2 + 5310^2 .

It is not a de Polignac number, because 47936349 - 29 = 47935837 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 (47936359) 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 11 ways as a sum of consecutive naturals, for example, 71644 + ... + 72309.

Almost surely, 247936349 is an apocalyptic number.

It is an amenable number.

47936349 is a deficient number, since it is larger than the sum of its proper divisors (23176927).

47936349 is a wasteful number, since it uses less digits than its factorization.

47936349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143996 (or 143993 counting only the distinct ones).

The product of its digits is 489888, while the sum is 45.

The square root of 47936349 is about 6923.6080911617. The cubic root of 47936349 is about 363.2634064756.

It can be divided in two parts, 47 and 936349, that added together give a triangular number (936396 = T1368).

The spelling of 47936349 in words is "forty-seven million, nine hundred thirty-six thousand, three hundred forty-nine".

Divisors: 1 3 9 37 111 333 143953 431859 1295577 5326261 15978783 47936349