2189769 has 16 divisors (see below), whose sum is σ = 3151680. Its totient is φ = 1347840.

The previous prime is 2189767. The next prime is 2189783. The reversal of 2189769 is 9679812.

It is not a de Polignac number, because 2189769 - 2¹ = 2189767 is a prime.

It is a super-2 number, since 2×2189769² = 9590176546722, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2189769.

It is not an unprimeable number, because it can be changed into a prime (2189767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1869 + ... + 2805.

It is an arithmetic number, because the mean of its divisors is an integer number (196980).

2^2189769 is an apocalyptic number.

It is an amenable number.

2189769 is a deficient number, since it is larger than the sum of its proper divisors (961911).

2189769 is a wasteful number, since it uses less digits than its factorization.

2189769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000.

The product of its digits is 54432, while the sum is 42.

The square root of 2189769 is about 1479.7868089695. The cubic root of 2189769 is about 129.8572199668.

The spelling of 2189769 in words is "two million, one hundred eighty-nine thousand, seven hundred sixty-nine".