2102869 has 4 divisors (see below), whose sum is σ = 2106720. Its totient is φ = 2099020.

The previous prime is 2102857. The next prime is 2102873. The reversal of 2102869 is 9682012.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2102869 - 2⁷ = 2102741 is a prime.

It is a super-2 number, since 2×2102869² = 8844116062322, 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 (2102809) 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, 937 + ... + 2254.

It is an arithmetic number, because the mean of its divisors is an integer number (526680).

2^2102869 is an apocalyptic number.

It is an amenable number.

2102869 is a deficient number, since it is larger than the sum of its proper divisors (3851).

2102869 is an equidigital number, since it uses as much as digits as its factorization.

2102869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3850.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 2102869 is about 1450.1272357969. The cubic root of 2102869 is about 128.1162071301.

The spelling of 2102869 in words is "two million, one hundred two thousand, eight hundred sixty-nine".