4989569 has 4 divisors (see below), whose sum is σ = 5373396. Its totient is φ = 4605744.

The previous prime is 4989541. The next prime is 4989581. The reversal of 4989569 is 9659894.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9659894 = 2 ⋅4829947.

It can be written as a sum of positive squares in 2 ways, for example, as 1658944 + 3330625 = 1288^2 + 1825^2 .

It is not a de Polignac number, because 4989569 - 2¹² = 4985473 is a prime.

It is a super-2 number, since 2×4989569² = 49791597611522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4989599) 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, 191894 + ... + 191919.

It is an arithmetic number, because the mean of its divisors is an integer number (1343349).

Almost surely, 2^4989569 is an apocalyptic number.

It is an amenable number.

4989569 is a deficient number, since it is larger than the sum of its proper divisors (383827).

4989569 is a wasteful number, since it uses less digits than its factorization.

4989569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383826.

The product of its digits is 699840, while the sum is 50.

The square root of 4989569 is about 2233.7343172365. The cubic root of 4989569 is about 170.8786001531.

The spelling of 4989569 in words is "four million, nine hundred eighty-nine thousand, five hundred sixty-nine".