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33840869 is a prime number
BaseRepresentation
bin1000000100010…
…1111011100101
32100200021221112
42001011323211
532130401434
63205154405
7560433266
oct201057345
970607845
1033840869
1118114167
12b3bba05
13701b2aa
1446cc96d
152e86dce
hex2045ee5

33840869 has 2 divisors, whose sum is σ = 33840870. Its totient is φ = 33840868.

The previous prime is 33840853. The next prime is 33840887. The reversal of 33840869 is 96804833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17960644 + 15880225 = 4238^2 + 3985^2 .

It is an emirp because it is prime and its reverse (96804833) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33840869 - 24 = 33840853 is a prime.

It is a super-2 number, since 2×338408692 = 2290408829350322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33840839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16920434 + 16920435.

It is an arithmetic number, because the mean of its divisors is an integer number (16920435).

Almost surely, 233840869 is an apocalyptic number.

It is an amenable number.

33840869 is a deficient number, since it is larger than the sum of its proper divisors (1).

33840869 is an equidigital number, since it uses as much as digits as its factorization.

33840869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 33840869 is about 5817.2905205087. The cubic root of 33840869 is about 323.4549751922.

The spelling of 33840869 in words is "thirty-three million, eight hundred forty thousand, eight hundred sixty-nine".