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864049 is a prime number
BaseRepresentation
bin11010010111100110001
31121220020211
43102330301
5210122144
630304121
710226044
oct3227461
91556224
10864049
1154019a
12358041
13243394
14186c5b
15121034
hexd2f31

864049 has 2 divisors, whose sum is σ = 864050. Its totient is φ = 864048.

The previous prime is 864047. The next prime is 864053. The reversal of 864049 is 940468.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 734449 + 129600 = 857^2 + 360^2 .

It is a cyclic number.

It is not a de Polignac number, because 864049 - 21 = 864047 is a prime.

Together with 864047, it forms a pair of twin primes.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 864049.

It is not a weakly prime, because it can be changed into another prime (864047) 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, 432024 + 432025.

It is an arithmetic number, because the mean of its divisors is an integer number (432025).

2864049 is an apocalyptic number.

It is an amenable number.

864049 is a deficient number, since it is larger than the sum of its proper divisors (1).

864049 is an equidigital number, since it uses as much as digits as its factorization.

864049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 864049 is about 929.5423605194. The cubic root of 864049 is about 95.2458636084.

The spelling of 864049 in words is "eight hundred sixty-four thousand, forty-nine".