2387855 has 4 divisors (see below), whose sum is σ = 2865432. Its totient is φ = 1910280.

The previous prime is 2387851. The next prime is 2387857. The reversal of 2387855 is 5587832.

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

It is not a de Polignac number, because 2387855 - 2² = 2387851 is a prime.

It is a super-4 number, since 4×2387855⁴ (a number of 27 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2387851) 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, 238781 + ... + 238790.

It is an arithmetic number, because the mean of its divisors is an integer number (716358).

2^2387855 is an apocalyptic number.

2387855 is a deficient number, since it is larger than the sum of its proper divisors (477577).

2387855 is an equidigital number, since it uses as much as digits as its factorization.

2387855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477576.

The product of its digits is 67200, while the sum is 38.

The square root of 2387855 is about 1545.2685850686. The cubic root of 2387855 is about 133.6603673487.

It can be divided in two parts, 23 and 87855, that added together give a palindrome (87878).

The spelling of 2387855 in words is "two million, three hundred eighty-seven thousand, eight hundred fifty-five".