12077887 has 4 divisors (see below), whose sum is σ = 12085480. Its totient is φ = 12070296.

The previous prime is 12077867. The next prime is 12077893. The reversal of 12077887 is 78877021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 78877021 = 4051 ⋅19471.

It is a cyclic number.

It is not a de Polignac number, because 12077887 - 2⁷ = 12077759 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 (12077867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 393 + ... + 4930.

It is an arithmetic number, because the mean of its divisors is an integer number (3021370).

Almost surely, 2^12077887 is an apocalyptic number.

12077887 is a deficient number, since it is larger than the sum of its proper divisors (7593).

12077887 is an equidigital number, since it uses as much as digits as its factorization.

12077887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7592.

The product of its (nonzero) digits is 43904, while the sum is 40.

The square root of 12077887 is about 3475.3254523857. The cubic root of 12077887 is about 229.4371049228.

The spelling of 12077887 in words is "twelve million, seventy-seven thousand, eight hundred eighty-seven".