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9998887 is a prime number
BaseRepresentation
bin100110001001…
…001000100111
3200210222220011
4212021020213
510024431022
6554151051
7150663163
oct46111047
920728804
109998887
11570a348
123422487
1320c1202
141483ca3
15d27977
hex989227

9998887 has 2 divisors, whose sum is σ = 9998888. Its totient is φ = 9998886.

The previous prime is 9998867. The next prime is 9998893. The reversal of 9998887 is 7888999.

It is a strong prime.

It is an emirp because it is prime and its reverse (7888999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9998887 - 219 = 9474599 is a prime.

It is a Chen prime.

It is a nialpdrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9998867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4999443 + 4999444.

It is an arithmetic number, because the mean of its divisors is an integer number (4999444).

Almost surely, 29998887 is an apocalyptic number.

9998887 is a deficient number, since it is larger than the sum of its proper divisors (1).

9998887 is an equidigital number, since it uses as much as digits as its factorization.

9998887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 58.

The square root of 9998887 is about 3162.1016745197. The cubic root of 9998887 is about 215.4354757539.

The spelling of 9998887 in words is "nine million, nine hundred ninety-eight thousand, eight hundred eighty-seven".