2868869 has 8 divisors (see below), whose sum is σ = 3120408. Its totient is φ = 2626560.

The previous prime is 2868857. The next prime is 2868871. The reversal of 2868869 is 9688682.

2868869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1144900 + 1723969 = 1070^2 + 1313^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2868869 - 2²⁰ = 1820293 is a prime.

It is a super-2 number, since 2×2868869² = 16460818678322, which contains 22 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 (2868809) 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 7 ways as a sum of consecutive naturals, for example, 1652 + ... + 2909.

It is an arithmetic number, because the mean of its divisors is an integer number (390051).

2^2868869 is an apocalyptic number.

It is an amenable number.

2868869 is a deficient number, since it is larger than the sum of its proper divisors (251539).

2868869 is a wasteful number, since it uses less digits than its factorization.

2868869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4615.

The product of its digits is 331776, while the sum is 47.

The square root of 2868869 is about 1693.7735976216. The cubic root of 2868869 is about 142.0922002552.

The spelling of 2868869 in words is "two million, eight hundred sixty-eight thousand, eight hundred sixty-nine".