12277887 has 4 divisors (see below), whose sum is σ = 16370520. Its totient is φ = 8185256.

The previous prime is 12277877. The next prime is 12277913. The reversal of 12277887 is 78877221.

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

It is a cyclic number.

It is not a de Polignac number, because 12277887 - 2¹⁰ = 12276863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12277807) 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, 2046312 + ... + 2046317.

It is an arithmetic number, because the mean of its divisors is an integer number (4092630).

Almost surely, 2^12277887 is an apocalyptic number.

12277887 is a deficient number, since it is larger than the sum of its proper divisors (4092633).

12277887 is an equidigital number, since it uses as much as digits as its factorization.

12277887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4092632.

The product of its digits is 87808, while the sum is 42.

The square root of 12277887 is about 3503.9815924174. The cubic root of 12277887 is about 230.6966088837.

The spelling of 12277887 in words is "twelve million, two hundred seventy-seven thousand, eight hundred eighty-seven".