12190877 has 2 divisors, whose sum is σ = 12190878. Its totient is φ = 12190876.

The previous prime is 12190873. The next prime is 12190883. The reversal of 12190877 is 77809121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9114361 + 3076516 = 3019^2 + 1754^2 .

It is a cyclic number.

It is not a de Polignac number, because 12190877 - 2² = 12190873 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12190873) 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, 6095438 + 6095439.

It is an arithmetic number, because the mean of its divisors is an integer number (6095439).

Almost surely, 2^12190877 is an apocalyptic number.

It is an amenable number.

12190877 is a deficient number, since it is larger than the sum of its proper divisors (1).

12190877 is an equidigital number, since it uses as much as digits as its factorization.

12190877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 35.

The square root of 12190877 is about 3491.5436414285. The cubic root of 12190877 is about 230.1503553746.

Adding to 12190877 its reverse (77809121), we get a palindrome (89999998).

The spelling of 12190877 in words is "twelve million, one hundred ninety thousand, eight hundred seventy-seven".