Search a number
-
+
85806943 is a prime number
BaseRepresentation
bin1010001110101…
…00111101011111
312222110102222221
411013110331133
5133431310233
612303050211
72061230005
oct507247537
9188412887
1085806943
1144488032
12248a0967
1314a14551
14b578a75
1577ee42d
hex51d4f5f

85806943 has 2 divisors, whose sum is σ = 85806944. Its totient is φ = 85806942.

The previous prime is 85806899. The next prime is 85806953. The reversal of 85806943 is 34960858.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85806943 - 225 = 52252511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 85806943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85806953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42903471 + 42903472.

It is an arithmetic number, because the mean of its divisors is an integer number (42903472).

Almost surely, 285806943 is an apocalyptic number.

85806943 is a deficient number, since it is larger than the sum of its proper divisors (1).

85806943 is an equidigital number, since it uses as much as digits as its factorization.

85806943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 85806943 is about 9263.2037114597. The cubic root of 85806943 is about 441.0699563197.

The spelling of 85806943 in words is "eighty-five million, eight hundred six thousand, nine hundred forty-three".