Search a number
-
+
12994997 is a prime number
BaseRepresentation
bin110001100100…
…100110110101
3220110012210012
4301210212311
511311314442
61142310005
7215312201
oct61444665
926405705
1012994997
117376374
124428305
1328ccb62
141a23b01
15121a582
hexc649b5

12994997 has 2 divisors, whose sum is σ = 12994998. Its totient is φ = 12994996.

The previous prime is 12994973. The next prime is 12994999. The reversal of 12994997 is 79949921.

12994997 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11771761 + 1223236 = 3431^2 + 1106^2 .

It is an emirp because it is prime and its reverse (79949921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12994997 - 214 = 12978613 is a prime.

Together with 12994999, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12994999) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6497498 + 6497499.

It is an arithmetic number, because the mean of its divisors is an integer number (6497499).

Almost surely, 212994997 is an apocalyptic number.

It is an amenable number.

12994997 is a deficient number, since it is larger than the sum of its proper divisors (1).

12994997 is an equidigital number, since it uses as much as digits as its factorization.

12994997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 367416, while the sum is 50.

The square root of 12994997 is about 3604.8574174300. The cubic root of 12994997 is about 235.1033014981.

The spelling of 12994997 in words is "twelve million, nine hundred ninety-four thousand, nine hundred ninety-seven".