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947116139 = 4871944797
BaseRepresentation
bin111000011100111…
…101100001101011
32110000011111002112
4320130331201223
53414430204024
6233551552535
732320232354
oct7034754153
92400144075
10947116139
11446693412
1222522b74b
131212b2268
148db02d2b
155823700e
hex3873d86b

947116139 has 4 divisors (see below), whose sum is σ = 949061424. Its totient is φ = 945170856.

The previous prime is 947116117. The next prime is 947116141. The reversal of 947116139 is 931611749.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-947116139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 947116096 and 947116105.

It is not an unprimeable number, because it can be changed into a prime (947116109) 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 3 ways as a sum of consecutive naturals, for example, 971912 + ... + 972885.

It is an arithmetic number, because the mean of its divisors is an integer number (237265356).

Almost surely, 2947116139 is an apocalyptic number.

947116139 is a deficient number, since it is larger than the sum of its proper divisors (1945285).

947116139 is a wasteful number, since it uses less digits than its factorization.

947116139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945284.

The product of its digits is 40824, while the sum is 41.

The square root of 947116139 is about 30775.2520542075. The cubic root of 947116139 is about 982.0518370325.

The spelling of 947116139 in words is "nine hundred forty-seven million, one hundred sixteen thousand, one hundred thirty-nine".

Divisors: 1 487 1944797 947116139