12749197 has 2 divisors, whose sum is σ = 12749198. Its totient is φ = 12749196.

The previous prime is 12749189. The next prime is 12749239. The reversal of 12749197 is 79194721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12524521 + 224676 = 3539^2 + 474^2 .

It is a cyclic number.

It is not a de Polignac number, because 12749197 - 2³ = 12749189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12749147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6374598 + 6374599.

It is an arithmetic number, because the mean of its divisors is an integer number (6374599).

Almost surely, 2^12749197 is an apocalyptic number.

It is an amenable number.

12749197 is a deficient number, since it is larger than the sum of its proper divisors (1).

12749197 is an equidigital number, since it uses as much as digits as its factorization.

12749197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31752, while the sum is 40.

The square root of 12749197 is about 3570.6017700102. The cubic root of 12749197 is about 233.6115318965.

The spelling of 12749197 in words is "twelve million, seven hundred forty-nine thousand, one hundred ninety-seven".