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130907939 = 177700467
BaseRepresentation
bin1111100110101…
…11111100100011
3100010022210221012
413303113330203
5232003023224
620553451135
73146461541
oct763277443
9303283835
10130907939
1167992088
1237a10aab
1321175b26
1413558d91
15b75c80e
hex7cd7f23

130907939 has 4 divisors (see below), whose sum is σ = 138608424. Its totient is φ = 123207456.

The previous prime is 130907923. The next prime is 130907963. The reversal of 130907939 is 939709031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 130907939 - 24 = 130907923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130907896 and 130907905.

It is not an unprimeable number, because it can be changed into a prime (130907969) 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, 3850217 + ... + 3850250.

It is an arithmetic number, because the mean of its divisors is an integer number (34652106).

Almost surely, 2130907939 is an apocalyptic number.

130907939 is a deficient number, since it is larger than the sum of its proper divisors (7700485).

130907939 is an equidigital number, since it uses as much as digits as its factorization.

130907939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7700484.

The product of its (nonzero) digits is 45927, while the sum is 41.

The square root of 130907939 is about 11441.5007319844. The cubic root of 130907939 is about 507.7563091732.

The spelling of 130907939 in words is "one hundred thirty million, nine hundred seven thousand, nine hundred thirty-nine".

Divisors: 1 17 7700467 130907939