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99894869 is a prime number
BaseRepresentation
bin1011111010001…
…00011001010101
320221222011222222
411331010121111
5201033113434
613525032125
72322043454
oct575043125
9227864888
1099894869
115142a548
1229555645
13179079b9
14d3a4b9b
158b8372e
hex5f44655

99894869 has 2 divisors, whose sum is σ = 99894870. Its totient is φ = 99894868.

The previous prime is 99894853. The next prime is 99894919. The reversal of 99894869 is 96849899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85340644 + 14554225 = 9238^2 + 3815^2 .

It is an emirp because it is prime and its reverse (96849899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99894869 - 24 = 99894853 is a prime.

It is a super-2 number, since 2×998948692 = 19957969705054322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99894829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49947434 + 49947435.

It is an arithmetic number, because the mean of its divisors is an integer number (49947435).

Almost surely, 299894869 is an apocalyptic number.

It is an amenable number.

99894869 is a deficient number, since it is larger than the sum of its proper divisors (1).

99894869 is an equidigital number, since it uses as much as digits as its factorization.

99894869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10077696, while the sum is 62.

The square root of 99894869 is about 9994.7420677074. The cubic root of 99894869 is about 463.9961680346.

The spelling of 99894869 in words is "ninety-nine million, eight hundred ninety-four thousand, eight hundred sixty-nine".