2112769 has 4 divisors (see below), whose sum is σ = 2115796. Its totient is φ = 2109744.

The previous prime is 2112767. The next prime is 2112779. The reversal of 2112769 is 9672112.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1849600 + 263169 = 1360^2 + 513^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112769 - 2¹ = 2112767 is a prime.

It is a super-2 number, since 2×2112769² = 8927585694722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2112767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127 + ... + 2059.

It is an arithmetic number, because the mean of its divisors is an integer number (528949).

2^2112769 is an apocalyptic number.

It is an amenable number.

2112769 is a deficient number, since it is larger than the sum of its proper divisors (3027).

2112769 is a wasteful number, since it uses less digits than its factorization.

2112769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3026.

The product of its digits is 1512, while the sum is 28.

The square root of 2112769 is about 1453.5367212424. The cubic root of 2112769 is about 128.3169432414.

The spelling of 2112769 in words is "two million, one hundred twelve thousand, seven hundred sixty-nine".