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989870117 is a prime number
BaseRepresentation
bin111011000000000…
…011100000100101
32112222121121112012
4323000003200211
54011401320432
6242120204005
733346520465
oct7300034045
92488547465
10989870117
11468835085
12237609605
1312a101482
1495671ba5
155bd7ecb2
hex3b003825

989870117 has 2 divisors, whose sum is σ = 989870118. Its totient is φ = 989870116.

The previous prime is 989870087. The next prime is 989870129. The reversal of 989870117 is 711078989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 959388676 + 30481441 = 30974^2 + 5521^2 .

It is a cyclic number.

It is not a de Polignac number, because 989870117 - 26 = 989870053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989870197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494935058 + 494935059.

It is an arithmetic number, because the mean of its divisors is an integer number (494935059).

Almost surely, 2989870117 is an apocalyptic number.

It is an amenable number.

989870117 is a deficient number, since it is larger than the sum of its proper divisors (1).

989870117 is an equidigital number, since it uses as much as digits as its factorization.

989870117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 50.

The square root of 989870117 is about 31462.2014010463. The cubic root of 989870117 is about 996.6119061174.

The spelling of 989870117 in words is "nine hundred eighty-nine million, eight hundred seventy thousand, one hundred seventeen".