12154349 has 2 divisors, whose sum is σ = 12154350. Its totient is φ = 12154348.

The previous prime is 12154339. The next prime is 12154367. The reversal of 12154349 is 94345121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11356900 + 797449 = 3370^2 + 893^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12154349 is a prime.

It is a super-2 number, since 2×12154349² = 295456399227602, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12154339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6077174 + 6077175.

It is an arithmetic number, because the mean of its divisors is an integer number (6077175).

Almost surely, 2^12154349 is an apocalyptic number.

It is an amenable number.

12154349 is a deficient number, since it is larger than the sum of its proper divisors (1).

12154349 is an equidigital number, since it uses as much as digits as its factorization.

12154349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4320, while the sum is 29.

The square root of 12154349 is about 3486.3087929786. The cubic root of 12154349 is about 229.9202559087.

The spelling of 12154349 in words is "twelve million, one hundred fifty-four thousand, three hundred forty-nine".