2090569 has 4 divisors (see below), whose sum is σ = 2251396. Its totient is φ = 1929744.

The previous prime is 2090567. The next prime is 2090573. The reversal of 2090569 is 9650902.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 164025 + 1926544 = 405^2 + 1388^2 .

It is a cyclic number.

It is not a de Polignac number, because 2090569 - 2¹ = 2090567 is a prime.

It is a super-2 number, since 2×2090569² = 8740957487522, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 8.

It is a self number, because there is not a number n which added to its sum of digits gives 2090569.

It is not an unprimeable number, because it can be changed into a prime (2090567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80394 + ... + 80419.

It is an arithmetic number, because the mean of its divisors is an integer number (562849).

2^2090569 is an apocalyptic number.

It is an amenable number.

2090569 is a deficient number, since it is larger than the sum of its proper divisors (160827).

2090569 is a wasteful number, since it uses less digits than its factorization.

2090569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160826.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 2090569 is about 1445.8800088527. The cubic root of 2090569 is about 127.8659281394.

The spelling of 2090569 in words is "two million, ninety thousand, five hundred sixty-nine".