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1089917 is a prime number
BaseRepresentation
bin100001010000101111101
32001101002022
410022011331
5234334132
635205525
712156413
oct4120575
92041068
101089917
11684964
124468a5
132c212a
142052b3
15167e12
hex10a17d

1089917 has 2 divisors, whose sum is σ = 1089918. Its totient is φ = 1089916.

The previous prime is 1089877. The next prime is 1089919. The reversal of 1089917 is 7199801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 763876 + 326041 = 874^2 + 571^2 .

It is a cyclic number.

It is not a de Polignac number, because 1089917 - 28 = 1089661 is a prime.

Together with 1089919, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1089919) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544958 + 544959.

It is an arithmetic number, because the mean of its divisors is an integer number (544959).

21089917 is an apocalyptic number.

It is an amenable number.

1089917 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089917 is an equidigital number, since it uses as much as digits as its factorization.

1089917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 35.

The square root of 1089917 is about 1043.9909003435. The cubic root of 1089917 is about 102.9116343944.

The spelling of 1089917 in words is "one million, eighty-nine thousand, nine hundred seventeen".