2855889 has 6 divisors (see below), whose sum is σ = 4125186. Its totient is φ = 1903920.

The previous prime is 2855873. The next prime is 2855893. The reversal of 2855889 is 9885582.

2855889 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in only one way, i.e., 2822400 + 33489 = 1680^2 + 183^2 .

It is not a de Polignac number, because 2855889 - 2⁴ = 2855873 is a prime.

It is a super-2 number, since 2×2855889² = 16312203960642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2855819) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 158652 + ... + 158669.

It is an arithmetic number, because the mean of its divisors is an integer number (687531).

2^2855889 is an apocalyptic number.

It is an amenable number.

2855889 is a deficient number, since it is larger than the sum of its proper divisors (1269297).

2855889 is a wasteful number, since it uses less digits than its factorization.

2855889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317327 (or 317324 counting only the distinct ones).

The product of its digits is 230400, while the sum is 45.

The square root of 2855889 is about 1689.9375728115. The cubic root of 2855889 is about 141.8775807975.

The spelling of 2855889 in words is "two million, eight hundred fifty-five thousand, eight hundred eighty-nine".