12077997 has 4 divisors (see below), whose sum is σ = 16104000. Its totient is φ = 8051996.

The previous prime is 12077993. The next prime is 12078019. The reversal of 12077997 is 79977021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12077997 - 2² = 12077993 is a prime.

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 in 3 ways as a sum of consecutive naturals, for example, 2012997 + ... + 2013002.

It is an arithmetic number, because the mean of its divisors is an integer number (4026000).

Almost surely, 2^12077997 is an apocalyptic number.

It is an amenable number.

12077997 is a deficient number, since it is larger than the sum of its proper divisors (4026003).

12077997 is an equidigital number, since it uses as much as digits as its factorization.

12077997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4026002.

The product of its (nonzero) digits is 55566, while the sum is 42.

The square root of 12077997 is about 3475.3412782056. The cubic root of 12077997 is about 229.4378014576.

The spelling of 12077997 in words is "twelve million, seventy-seven thousand, nine hundred ninety-seven".