12077389 has 4 divisors (see below), whose sum is σ = 12213180. Its totient is φ = 11941600.

The previous prime is 12077371. The next prime is 12077393. The reversal of 12077389 is 98377021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2205225 + 9872164 = 1485^2 + 3142^2 .

It is a cyclic number.

It is not a de Polignac number, because 12077389 - 2⁵ = 12077357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12077399) 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 in 3 ways as a sum of consecutive naturals, for example, 67762 + ... + 67939.

It is an arithmetic number, because the mean of its divisors is an integer number (3053295).

Almost surely, 2^12077389 is an apocalyptic number.

It is an amenable number.

12077389 is a deficient number, since it is larger than the sum of its proper divisors (135791).

12077389 is an equidigital number, since it uses as much as digits as its factorization.

12077389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135790.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 12077389 is about 3475.2538036811. The cubic root of 12077389 is about 229.4339514670.

The spelling of 12077389 in words is "twelve million, seventy-seven thousand, three hundred eighty-nine".