2118969 has 6 divisors (see below), whose sum is σ = 3060746. Its totient is φ = 1412640.

The previous prime is 2118959. The next prime is 2118973. The reversal of 2118969 is 9698112.

It can be written as a sum of positive squares in only one way, i.e., 2073600 + 45369 = 1440^2 + 213^2 .

It is not a de Polignac number, because 2118969 - 2⁷ = 2118841 is a prime.

It is a super-2 number, since 2×2118969² = 8980059245922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2118959) 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, 117712 + ... + 117729.

2^2118969 is an apocalyptic number.

It is an amenable number.

2118969 is a deficient number, since it is larger than the sum of its proper divisors (941777).

2118969 is a wasteful number, since it uses less digits than its factorization.

2118969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235447 (or 235444 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 2118969 is about 1455.6678879470. The cubic root of 2118969 is about 128.4423376266.

It can be divided in two parts, 211 and 8969, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 2118969 in words is "two million, one hundred eighteen thousand, nine hundred sixty-nine".