12078377 has 2 divisors, whose sum is σ = 12078378. Its totient is φ = 12078376.

The previous prime is 12078373. The next prime is 12078397. The reversal of 12078377 is 77387021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11978521 + 99856 = 3461^2 + 316^2 .

It is a cyclic number.

It is not a de Polignac number, because 12078377 - 2² = 12078373 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12078373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6039188 + 6039189.

It is an arithmetic number, because the mean of its divisors is an integer number (6039189).

Almost surely, 2^12078377 is an apocalyptic number.

It is an amenable number.

12078377 is a deficient number, since it is larger than the sum of its proper divisors (1).

12078377 is an equidigital number, since it uses as much as digits as its factorization.

12078377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16464, while the sum is 35.

The square root of 12078377 is about 3475.3959486654. The cubic root of 12078377 is about 229.4402076361.

The spelling of 12078377 in words is "twelve million, seventy-eight thousand, three hundred seventy-seven".