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39530961 = 3231314033
BaseRepresentation
bin1001011011001…
…1000111010001
32202101101021200
42112303013101
540104442321
63531141413
7660002421
oct226630721
982341250
1039530961
1120350218
12112a4869
138261202
145370481
15370cd26
hex25b31d1

39530961 has 12 divisors (see below), whose sum is σ = 57286788. Its totient is φ = 26267904.

The previous prime is 39530941. The next prime is 39530971. The reversal of 39530961 is 16903593.

39530961 is a `hidden beast` number, since 39 + 530 + 96 + 1 = 666.

39530961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1782225 + 37748736 = 1335^2 + 6144^2 .

It is not a de Polignac number, because 39530961 - 214 = 39514577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (39530941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4200 + ... + 9833.

It is an arithmetic number, because the mean of its divisors is an integer number (4773899).

Almost surely, 239530961 is an apocalyptic number.

It is an amenable number.

39530961 is a deficient number, since it is larger than the sum of its proper divisors (17755827).

39530961 is a wasteful number, since it uses less digits than its factorization.

39530961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14352 (or 14349 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 36.

The square root of 39530961 is about 6287.3651874215. The cubic root of 39530961 is about 340.6531878140.

The spelling of 39530961 in words is "thirty-nine million, five hundred thirty thousand, nine hundred sixty-one".

Divisors: 1 3 9 313 939 2817 14033 42099 126297 4392329 13176987 39530961