12077998 has 4 divisors (see below), whose sum is σ = 18117000. Its totient is φ = 6038998.

The previous prime is 12077993. The next prime is 12078019. The reversal of 12077998 is 89977021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12077993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3019498 + ... + 3019501.

It is an arithmetic number, because the mean of its divisors is an integer number (4529250).

Almost surely, 2^12077998 is an apocalyptic number.

12077998 is a deficient number, since it is larger than the sum of its proper divisors (6039002).

12077998 is an equidigital number, since it uses as much as digits as its factorization.

12077998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6039001.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 12077998 is about 3475.3414220764. The cubic root of 12077998 is about 229.4378077897.

The spelling of 12077998 in words is "twelve million, seventy-seven thousand, nine hundred ninety-eight".