12206749 has 2 divisors, whose sum is σ = 12206750. Its totient is φ = 12206748.

The previous prime is 12206743. The next prime is 12206773. The reversal of 12206749 is 94760221.

12206749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11868025 + 338724 = 3445^2 + 582^2 .

It is a cyclic number.

It is not a de Polignac number, because 12206749 - 2³ = 12206741 is a prime.

It is a super-2 number, since 2×12206749² = 298009442298002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12206749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12206741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6103374 + 6103375.

It is an arithmetic number, because the mean of its divisors is an integer number (6103375).

Almost surely, 2^12206749 is an apocalyptic number.

It is an amenable number.

12206749 is a deficient number, since it is larger than the sum of its proper divisors (1).

12206749 is an equidigital number, since it uses as much as digits as its factorization.

12206749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 12206749 is about 3493.8158222780. The cubic root of 12206749 is about 230.2501940288.

The spelling of 12206749 in words is "twelve million, two hundred six thousand, seven hundred forty-nine".