Search a number
-
+
338825749 is a prime number
BaseRepresentation
bin10100001100100…
…001001000010101
3212121120010112211
4110030201020111
51143214410444
653342113421
711252654113
oct2414411025
9777503484
10338825749
11164292889
129557b871
1355273012
1432ddcab3
151eb2cc34
hex14321215

338825749 has 2 divisors, whose sum is σ = 338825750. Its totient is φ = 338825748.

The previous prime is 338825723. The next prime is 338825801. The reversal of 338825749 is 947528833.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 338817649 + 8100 = 18407^2 + 90^2 .

It is an emirp because it is prime and its reverse (947528833) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 338825749 - 211 = 338823701 is a prime.

It is a super-2 number, since 2×3388257492 = 229605776370822002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (338805749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169412874 + 169412875.

It is an arithmetic number, because the mean of its divisors is an integer number (169412875).

Almost surely, 2338825749 is an apocalyptic number.

It is an amenable number.

338825749 is a deficient number, since it is larger than the sum of its proper divisors (1).

338825749 is an equidigital number, since it uses as much as digits as its factorization.

338825749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 49.

The square root of 338825749 is about 18407.2200236755. The cubic root of 338825749 is about 697.1487756945.

The spelling of 338825749 in words is "three hundred thirty-eight million, eight hundred twenty-five thousand, seven hundred forty-nine".