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1143887 is a prime number
BaseRepresentation
bin100010111010001001111
32011010010012
410113101033
5243101022
640303435
712502643
oct4272117
92133105
101143887
11711468
12471b7b
13310874
1421ac23
15178de2
hex11744f

1143887 has 2 divisors, whose sum is σ = 1143888. Its totient is φ = 1143886.

The previous prime is 1143851. The next prime is 1143893. The reversal of 1143887 is 7883411.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1143887 - 210 = 1142863 is a prime.

It is a Chen prime.

It is equal to p88871 and since 1143887 and 88871 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1143817) 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, 571943 + 571944.

It is an arithmetic number, because the mean of its divisors is an integer number (571944).

21143887 is an apocalyptic number.

1143887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143887 is an equidigital number, since it uses as much as digits as its factorization.

1143887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 32.

The square root of 1143887 is about 1069.5265307602. The cubic root of 1143887 is about 104.5829869708.

The spelling of 1143887 in words is "one million, one hundred forty-three thousand, eight hundred eighty-seven".