Search a number
-
+
2389489 = 3317219
BaseRepresentation
bin1001000111010111110001
311111101202121
421013113301
51102430424
6123114241
726211304
oct11072761
94441677
102389489
111392293
12972981
136587cb
14462b3b
15322ee4
hex2475f1

2389489 has 4 divisors (see below), whose sum is σ = 2397040. Its totient is φ = 2381940.

The previous prime is 2389483. The next prime is 2389501. The reversal of 2389489 is 9849832.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2389489 - 23 = 2389481 is a prime.

It is a super-2 number, since 2×23894892 = 11419315362242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2389481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3279 + ... + 3940.

It is an arithmetic number, because the mean of its divisors is an integer number (599260).

22389489 is an apocalyptic number.

It is an amenable number.

2389489 is a deficient number, since it is larger than the sum of its proper divisors (7551).

2389489 is an equidigital number, since it uses as much as digits as its factorization.

2389489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7550.

The product of its digits is 124416, while the sum is 43.

The square root of 2389489 is about 1545.7972053280. The cubic root of 2389489 is about 133.6908481557.

The spelling of 2389489 in words is "two million, three hundred eighty-nine thousand, four hundred eighty-nine".

Divisors: 1 331 7219 2389489