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39230129 = 281139609
BaseRepresentation
bin1001010110100…
…1101010110001
32201211002121202
42111221222301
540020331004
63520500545
7654310361
oct225515261
981732552
1039230129
11201651a4
121117a755
1381872c3
1452d29a1
15369db1e
hex2569ab1

39230129 has 4 divisors (see below), whose sum is σ = 39370020. Its totient is φ = 39090240.

The previous prime is 39230083. The next prime is 39230131. The reversal of 39230129 is 92103293.

39230129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 33373729 + 5856400 = 5777^2 + 2420^2 .

It is a cyclic number.

It is not a de Polignac number, because 39230129 - 28 = 39229873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (39230179) 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 3 ways as a sum of consecutive naturals, for example, 69524 + ... + 70085.

It is an arithmetic number, because the mean of its divisors is an integer number (9842505).

Almost surely, 239230129 is an apocalyptic number.

It is an amenable number.

39230129 is a deficient number, since it is larger than the sum of its proper divisors (139891).

39230129 is a wasteful number, since it uses less digits than its factorization.

39230129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139890.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 39230129 is about 6263.3959638522. The cubic root of 39230129 is about 339.7868589157.

The spelling of 39230129 in words is "thirty-nine million, two hundred thirty thousand, one hundred twenty-nine".

Divisors: 1 281 139609 39230129