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6985449 = 328812
BaseRepresentation
bin11010101001011011101001
3111010220020100
4122221123221
53242013244
6405420013
7113242512
oct32513351
914126210
106985449
113a412a9
12240a609
1315a7703
14cdba09
1592eb69
hex6a96e9

6985449 has 9 divisors (see below), whose sum is σ = 10101559. Its totient is φ = 4651680.

The previous prime is 6985441. The next prime is 6985481. The reversal of 6985449 is 9445896.

It is a happy number.

The square root of 6985449 is 2643.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1225449 + 5760000 = 1107^2 + 2400^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 6985449 - 23 = 6985441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6985441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7489 + ... + 8369.

Almost surely, 26985449 is an apocalyptic number.

6985449 is the 2643-rd square number.

6985449 is the 1322-nd centered octagonal number.

It is an amenable number.

6985449 is a deficient number, since it is larger than the sum of its proper divisors (3116110).

6985449 is an frugal number, since it uses more digits than its factorization.

6985449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1768 (or 884 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The cubic root of 6985449 is about 191.1604784154.

The spelling of 6985449 in words is "six million, nine hundred eighty-five thousand, four hundred forty-nine".

Divisors: 1 3 9 881 2643 7929 776161 2328483 6985449