4989817 has 6 divisors (see below), whose sum is σ = 5804538. Its totient is φ = 4276944.

The previous prime is 4989811. The next prime is 4989821. The reversal of 4989817 is 7189894.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4769856 + 219961 = 2184^2 + 469^2 .

It is not a de Polignac number, because 4989817 - 2¹¹ = 4987769 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4989811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50868 + ... + 50965.

It is an arithmetic number, because the mean of its divisors is an integer number (967423).

Almost surely, 2^4989817 is an apocalyptic number.

It is an amenable number.

4989817 is a deficient number, since it is larger than the sum of its proper divisors (814721).

4989817 is a wasteful number, since it uses less digits than its factorization.

4989817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101847 (or 101840 counting only the distinct ones).

The product of its digits is 145152, while the sum is 46.

The square root of 4989817 is about 2233.7898289678. The cubic root of 4989817 is about 170.8814312053.

The spelling of 4989817 in words is "four million, nine hundred eighty-nine thousand, eight hundred seventeen".